Add remove command to remove a package from the list of current installed packages

Hi All

I have added a new command to be able to remove a package from the current list of installed packaged.
The command will remove the name from either the 'require' or 'require-dev' section of the composer.json, then run an update that will remove the installed package (removing the actual files and updating composer.lock).

Related: #1622, #2038