feat: Search terms for use, while, and range (#5093) (#10265)

# Description

Add search terms to the commands: `use` ("environment", "import"),
`while` ("loop"), and `range` ("filter", "head", "tail").

# Tests + Formatting
All completed successfully.

---------

Co-authored-by: Stefan Holderbach <sholderbach@users.noreply.github.com>

crates/nu-command/src/filters/range.rs

@@ -33,6 +33,10 @@ impl Command for Range {
         "Return only the selected rows."
     }
 
+    fn search_terms(&self) -> Vec<&str> {
+        vec!["filter", "head", "tail"]
+    }
+
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {