print nushell startup time (#7831)

# Description

This PR shows the startup time and decreases the banner. This startup
time output can be disabled with the `show_banner: false` setting in the
config. This is the startup in debug mode.

![image](https://user-images.githubusercontent.com/343840/213955410-f319f8d4-1f96-47ae-8366-1c564a08d3e4.png)

On my mac in release mode
```
Startup Time: 368ms 429µs 83ns
```
On my mac without a config as `nu --config foo --env-config foo`
```
Startup Time: 11ms 663µs 791ns
```

I could really go either way on this. If people don't like this change,
we don't have to merge it.

# User-Facing Changes

Startup Time

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.

crates/nu-cli/Cargo.toml

@@ -8,24 +8,24 @@ name = "nu-cli"
 version = "0.74.1"
 
 [dev-dependencies]
-nu-test-support = { path="../nu-test-support", version = "0.74.1"  }
+nu-test-support = { path = "../nu-test-support", version = "0.74.1" }
 nu-command = { path = "../nu-command", version = "0.74.1" }
-rstest = {version = "0.15.0", default-features = false}
+rstest = { version = "0.15.0", default-features = false }
 
 [dependencies]
-nu-engine = { path = "../nu-engine", version = "0.74.1"  }
-nu-path = { path = "../nu-path", version = "0.74.1"  }
-nu-parser = { path = "../nu-parser", version = "0.74.1"  }
-nu-protocol = { path = "../nu-protocol", version = "0.74.1"  }
-nu-utils = { path = "../nu-utils", version = "0.74.1"  }
+nu-engine = { path = "../nu-engine", version = "0.74.1" }
+nu-path = { path = "../nu-path", version = "0.74.1" }
+nu-parser = { path = "../nu-parser", version = "0.74.1" }
+nu-protocol = { path = "../nu-protocol", version = "0.74.1" }
+nu-utils = { path = "../nu-utils", version = "0.74.1" }
 nu-ansi-term = "0.46.0"
-nu-color-config = { path = "../nu-color-config", version = "0.74.1"  }
-reedline = { version = "0.14.0", features = ["bashisms", "sqlite"]}
+nu-color-config = { path = "../nu-color-config", version = "0.74.1" }
+reedline = { version = "0.14.0", features = ["bashisms", "sqlite"] }
 
 atty = "0.2.14"
 chrono = { default-features = false, features = ["std"], version = "0.4.23" }
 crossterm = "0.24.0"
-fancy-regex = "0.10.0"
+fancy-regex = "0.11.0"
 fuzzy-matcher = "0.3.7"
 is_executable = "1.0.1"
 once_cell = "1.17.0"

crates/nu-cli/src/repl.rs

@@ -41,6 +41,7 @@ pub fn evaluate_repl(
     stack: &mut Stack,
     nushell_path: &str,
     prerun_command: Option<Spanned<String>>,
+    start_time: Instant,
 ) -> Result<()> {
     use reedline::{FileBackedHistory, Reedline, Signal};
 
@@ -307,6 +308,13 @@ pub fn evaluate_repl(
             column!()
         );
 
+        if entry_num == 1 && show_banner {
+            println!(
+                "Startup Time: {}",
+                format_duration(start_time.elapsed().as_nanos() as i64)
+            );
+        }
+
         let input = line_editor.read_line(prompt);
         let shell_integration = config.shell_integration;
 
@@ -578,15 +586,7 @@ Our {}Documentation{} is located at {}http://nushell.sh{}
 {}Tweet{} us at {}@nu_shell{}
 
 It's been this long since {}Nushell{}'s first commit:
-{}
-
-{}You can disable this banner using the {}config nu{}{} command
-to modify the config.nu file and setting show_banner to false.
-
-let-env config = {{
-    show_banner: false
-    ...
-}}{}
+{}{}
 "#,
         "\x1b[32m",   //start line 1 green
         "\x1b[32m",   //start line 2
@@ -618,11 +618,7 @@ let-env config = {{
         "\x1b[32m",   //before Nushell
         "\x1b[0m",    //after Nushell
         age,
-        "\x1b[2;37m", //before banner disable dim white
-        "\x1b[2;36m", //before config nu dim cyan
-        "\x1b[0m",    //after config nu
-        "\x1b[2;37m", //after config nu dim white
-        "\x1b[0m",    //after banner disable
+        "\x1b[0m", //after banner disable
     );
 
     banner

crates/nu-command/Cargo.toml

@@ -34,10 +34,7 @@ base64 = "0.21.0"
 byteorder = "1.4.3"
 bytesize = "1.1.0"
 calamine = "0.19.1"
-chrono = { version = "0.4.23", features = [
-	"unstable-locales",
-	"std",
-], default-features = false }
+chrono = { version = "0.4.23", features = ["unstable-locales", "std"], default-features = false }
 chrono-humanize = "0.2.1"
 chrono-tz = "0.6.3"
 crossterm = "0.24.0"
@@ -47,7 +44,7 @@ digest = { default-features = false, version = "0.10.0" }
 dtparse = "1.2.0"
 eml-parser = "0.1.0"
 encoding_rs = "0.8.30"
-fancy-regex = "0.10.0"
+fancy-regex = "0.11.0"
 filesize = "0.2.0"
 filetime = "0.2.15"
 fs_extra = "1.2.0"
@@ -59,9 +56,7 @@ Inflector = "0.11"
 is-root = "0.1.2"
 itertools = "0.10.0"
 log = "0.4.14"
-lscolors = { version = "0.12.0", features = [
-	"crossterm",
-], default-features = false }
+lscolors = { version = "0.12.0", features = ["crossterm"], default-features = false }
 md5 = { package = "md-5", version = "0.10.0" }
 mime = "0.3.16"
 mime_guess = "2.0.4"
@@ -147,20 +142,14 @@ features = [
 
 [target.'cfg(windows)'.dependencies.windows]
 version = "0.43.0"
-features = [
-	"Win32_Foundation",
-	"Win32_Storage_FileSystem",
-	"Win32_System_SystemServices",
-]
+features = ["Win32_Foundation", "Win32_Storage_FileSystem", "Win32_System_SystemServices"]
 
 [features]
 trash-support = ["trash"]
 which-support = ["which"]
 plugin = ["nu-parser/plugin"]
 dataframe = ["polars", "num", "sqlparser"]
-sqlite = [
-	"rusqlite",
-] # TODO: given that rusqlite is included in reedline, should we just always include it?
+sqlite = ["rusqlite"]                      # TODO: given that rusqlite is included in reedline, should we just always include it?
 
 [build-dependencies]
 shadow-rs = { version = "0.20.0", default-features = false }