[Context7] Exclude files based on globs

### Problem Description While folder exclusion supports globs, file exclusion does not. This makes it impossible for me to exclude some files in the same folder as files I keep. In my particular case, I have some compiler snapshot tests that look like: ``` test_case/ Input.kt Input.fir.txt Input.ir.txt ``` where the `.txt` files are the IR snapshots. I would like to be able to exclude `compiler-tests/**.txt`, but that doesn't seem possible currently. The input files are valuable as example snippets. ### Proposed Solution Add glob support to excludeFiles. ### Alternatives Considered _No response_ ### Priority Would improve my workflow ### Additional Context _No response_