Move static feature out of perf features (#13265)

#5577 fixed a bug on macos due to dynamically linking lzma/xz through
static linking. In #7686, this feature was moved to the performance
category.

This PR moves the `xz2/static` back to the general default features,
and, inspired by https://github.com/Homebrew/homebrew-core/pull/222211,
it structures and documents the feature flags cleaner.

We need to take care that this feature does not accidentally disable
features we want.

---------

Co-authored-by: Zanie Blue <contact@zanie.dev>

.github/workflows/ci.yml

@@ -2250,7 +2250,7 @@ jobs:
           cargo run --bin uv -- pip compile scripts/requirements/airflow.in --universal --exclude-newer 2024-08-08 --cache-dir .cache
 
       - name: "Build benchmarks"
-        run: cargo codspeed build --profile profiling --features "codspeed,performance" -p uv-bench
+        run: cargo codspeed build --profile profiling --features codspeed -p uv-bench
 
       - name: "Run benchmarks"
         uses: CodSpeedHQ/action@0010eb0ca6e89b80c88e8edaaa07cfe5f3e6664d # v3.5.0