Add ignore package and implement .convexignore support in bundler

- Added the `ignore` package to dependencies.
- Implemented loading and processing of `.convexignore` files in the bundler to skip specified files during the build process.
- Updated entry point logic to respect ignore patterns.

This enhances the build process by allowing users to exclude files from being processed based on their ignore configuration. This brings both Typescript performance boosts and reduced circular dependency relateded issues

Author: front-depiction