Proposal: Add litellm/proxy/_experimental/out/ to .gitignore

[KarthiDreamr]

I've noticed that the machine-generated build artifacts in litellm/proxy/_experimental/out/ are currently tracked in the repository. While this makes it easy to run the dashboard without a local node build, it creates several friction points for contributors:

1. IDE Performance & Linting Errors: Because these are minified, single-line files, IDEs (like VS Code/Cursor) often struggle to parse them, resulting in constant linting "noise" and red squigglies that can't be resolved.
2. Git Noise: Any small change to the UI source code generates massive, unreadable diffs in the out/ directory, cluttering the commit history and making PR reviews significantly harder.
3. Tracking Issues: Files frequently show up as "Index Modified" or "Index Added" despite being automated outputs rather than source code.

Proposed Change:
Add litellm/proxy/_experimental/out/ to the root .gitignore.

Recommendation for Distribution:
To maintain the convenience of bundled UI for PyPI users, the build process could be moved to the CI/CD pipeline. The artifacts can be generated during the release phase and packaged into the final distribution without needing to be stored in the source control history.

What are the maintainers' thoughts on moving toward a cleaner source tree?