implement --no-dedupe for uv pip tree (#4449)

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## Summary
Resolves https://github.com/astral-sh/uv/issues/4439 partially.

Implements for `uv pip tree`:
- `--no-dedupe` flag, similar to `cargo tree --no-dedupe` .
- denote dependency cycles with `(#)` and add a footnote if there's a
cycle (using `(*)` would require keeping track of the cycle state, so
opted to do this instead).
<!-- What's the purpose of the change? What does it do, and why? -->

## Test Plan
The existing tests pass + added a couple of tests to validate
`--no-dedupe` behavior.
<!-- How was it tested? -->

crates/uv-cli/src/lib.rs

@@ -1385,6 +1385,14 @@ pub struct PipShowArgs {
 #[derive(Args)]
 #[allow(clippy::struct_excessive_bools)]
 pub struct PipTreeArgs {
+    /// Do not de-duplicate repeated dependencies.
+    /// Usually, when a package has already displayed its dependencies,
+    /// further occurrences will not re-display its dependencies,
+    /// and will include a (*) to indicate it has already been shown.
+    /// This flag will cause those duplicates to be repeated.
+    #[arg(long)]
+    pub no_dedupe: bool,
+
     /// Validate the virtual environment, to detect packages with missing dependencies or other
     /// issues.
     #[arg(long, overrides_with("no_strict"))]