1- Removed unsupported options from configure.
2- Reformatted files to break lines at 80 charachters.
3- Moved multiple 'apt install' and rm commands into a single one.
4- All workflows use and install llvm + clang version 11.
5- Updated workflows to ubuntu 22.04 where we are building PG server.
6- Added .vscode folder/files to .gitignore file.