feat: Knowledge filters

[kaiz-io]

The knowledge feature needs to have a way to when adding and updating to allow different file type and path filters.

Say when adding a projects in particular ts project it will add all of the node_modules directory. A filter for just ts and md would or excluding a path be nice to not add just my code into the knowledge without adding all the js.

Same goes for just adding the .md for large code bases. I may want to just grab the "docs" from a 3rd project to add without pulling in the code base. Helps when projects have nice documentation throughout the project.

I would like something like

/knowledge add ./ --include **/*.ts --include **/*.md

/knowledge add ./ --exclude node_modules/**

[kaiz-io]

This is fixed in #2545