Add product-info.json to built package (Fix #7)

Just a copy of intellij-idea-community-edition!1 (merged)

I took the extra liberty to increase pkgrel, to reduce the amount of work needed to make a new release.

Fix #7 (closed)

Also there is the pkgctl build binaries of this MR:

• pycharm-community-edition-2024.3-3-x86_64.pkg.tar.zst

(Note: I provide binaries to allow the testing of the fixed version of the package, final repo package may be different from the one provided here)