kython.klogging

- move to core
- add a proper description why it's useful
- make default level INFO
- use HPI_LOGS variable for easier log level control (abdc6df1ea)

lint

@@ -42,7 +42,6 @@ def subpackages(package: str) -> Iterable[str]:
 def core_modules() -> Iterable[str]:
     return [
         *subpackages('my.core'),
-        *subpackages('my.kython'),
         'my.config',
         'my.cfg',
         'tests/misc.py',