feat: ignore path list for web

[buenaflor]

:scroll: Description

Adds support for ignoring files and directories when uploading sourcemaps and sources for Flutter Web

:bulb: Motivation and Context

Closes #329

:green_heart: How did you test it?

:pencil: Checklist

• [ ] I reviewed submitted code
• [ ] I added tests to verify changes
• [ ] I updated the docs if needed
• [ ] All tests passing
• [ ] No breaking changes

:crystal_ball: Next steps