base: add Functor, Applicative, Monad, Alternative, MonadPlus and Generic instances to Kleisli

Thank you for your contribution to GHC!

Please take a few moments to verify that your commits fulfill the following:

• are either individually buildable or squashed
• have commit messages which describe what they do (referring to Notes and tickets using #NNNN syntax when appropriate)
• have added source comments describing your change. For larger changes you likely should add a Note and cross-reference it from the relevant places.
• add a testcase to the testsuite.
• There are some uniquely definable instances for Kleisli that are not defined yet. This MR adds them.

If you have any questions don't hesitate to open your merge request and inquire in a comment. If your patch isn't quite done yet please do add prefix your MR title with WIP:.