hook_install() doesn't seem to work, even though I have disabled and uninstalled module
The code in your git repo is not the same as the code posted here.  Both has syntax errors.  See @ARUN's answer for the bug in the code posted here.

As for the code in the git repo, there are two lines of random junk in it (indicated with red striketroughs below), causing Drupal to crash before the table is created in the database.



Remove those two lines and try again.