Test command names and search terms for redundancy (#6380)

* Test commands for proper names and search terms

Assert that the `Command.name()` is equal to `Signature.name`

Check that search terms are not just substrings of the command name as
they would not help finding the command.

* Clean up search terms

Remove redundant terms that just replicate the command name.
Try to eliminate substring between search terms, clean up where
necessary.

crates/nu-command/src/database/commands/collect.rs

@@ -34,7 +34,7 @@ impl Command for CollectDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "collect"]
+        vec!["database"]
     }
 
     fn run(

crates/nu-command/src/database/commands/describe.rs

@@ -47,7 +47,7 @@ impl Command for DescribeDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "SQLite", "describe"]
+        vec!["database", "SQLite"]
     }
 
     fn run(

crates/nu-command/src/database/commands/from.rs

@@ -41,7 +41,7 @@ impl Command for FromDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "from"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/into_sqlite.rs

@@ -49,7 +49,7 @@ impl Command for IntoSqliteDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["convert", "sqlite", "database"]
+        vec!["convert", "database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/join.rs

@@ -47,7 +47,7 @@ impl Command for JoinDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "join"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/limit.rs

@@ -34,7 +34,7 @@ impl Command for LimitDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "limit"]
+        vec!["database", "head", "tail"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/open.rs

@@ -29,7 +29,7 @@ impl Command for OpenDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "open"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/order_by.rs

@@ -37,7 +37,7 @@ impl Command for OrderByDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "order-by"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/schema.rs

@@ -34,7 +34,7 @@ impl Command for SchemaDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "info", "SQLite", "schema"]
+        vec!["database", "info", "SQLite"]
     }
 
     fn run(

crates/nu-command/src/database/commands/select.rs

@@ -33,7 +33,7 @@ impl Command for ProjectionDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "select"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/to_db.rs

@@ -30,7 +30,7 @@ impl Command for ToDataBase {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "into", "db"]
+        vec!["database", "convert"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/commands/where_.rs

@@ -31,7 +31,7 @@ impl Command for WhereDb {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "where"]
+        vec!["database"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/expressions/and.rs

@@ -30,7 +30,7 @@ impl Command for AndExpr {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "and", "expression"]
+        vec!["database", "expression"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/expressions/or.rs

@@ -30,7 +30,7 @@ impl Command for OrExpr {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "or", "expression"]
+        vec!["database", "expression"]
     }
 
     fn examples(&self) -> Vec<Example> {

crates/nu-command/src/database/expressions/over.rs

@@ -92,7 +92,7 @@ impl Command for OverExpr {
     }
 
     fn search_terms(&self) -> Vec<&str> {
-        vec!["database", "over", "expression"]
+        vec!["database", "expression"]
     }
 
     fn run(