Add ls alias to uv {tool, python, pip} list (#10240)

## Summary

This PR adds `ls` alias to `uv {tool, python, pip} list` for
convenience.

Not sure if folks previously discussed this or have any opinion on
having aliases – but I have a muscle memory for `ls` for listing things
in commands I'm using (like `docker images ls`, `zellij ls`, `helm ls`
etc.) and thought having `ls` alias for `list` command would be useful.

## Test Plan

I simply compiled `uv` and manually checked `./target/release/uv {tool,
python, pip} ls`.

crates/uv-cli/src/lib.rs

@@ -613,7 +613,8 @@ pub enum PipCommand {
     /// List, in tabular format, packages installed in an environment.
     #[command(
         after_help = "Use `uv help pip list` for more details.",
-        after_long_help = ""
+        after_long_help = "",
+        alias = "ls"
     )]
     List(PipListArgs),
     /// Show information about one or more installed packages.
@@ -3724,6 +3725,7 @@ pub enum ToolCommand {
     #[command(alias = "update")]
     Upgrade(ToolUpgradeArgs),
     /// List installed tools.
+    #[command(alias = "ls")]
     List(ToolListArgs),
     /// Uninstall a tool.
     Uninstall(ToolUninstallArgs),
@@ -4203,6 +4205,7 @@ pub enum PythonCommand {
     /// Use `--all-versions` to view all available patch versions.
     ///
     /// Use `--only-installed` to omit available downloads.
+    #[command(alias = "ls")]
     List(PythonListArgs),
 
     /// Download and install Python versions.