Accept requirements in uv remove (#10338)

## Summary

This allows, e.g., `uv remove flask[dotenv]` to remove `flask`. Like
`pip install` and `uv pip install`, the content after the package name
has no effect.

Closes https://github.com/astral-sh/uv/issues/9764.

crates/uv-cli/src/lib.rs

@@ -3272,7 +3272,7 @@ pub struct AddArgs {
 pub struct RemoveArgs {
     /// The names of the dependencies to remove (e.g., `ruff`).
     #[arg(required = true)]
-    pub packages: Vec<PackageName>,
+    pub packages: Vec<Requirement<VerbatimParsedUrl>>,
 
     /// Remove the packages from the development dependency group.
     ///