feat(core/scripts): add git args to repository_prep script

[NaddiNadja]

This solves issue #198

I've added it as both an argument in the configuration file, so that you can adjust these args per repository, or in the workflow file, so as to let you just adjust it for every repository. The configuration file will overwrite the setting in the workflow.

In the configuration file:

[cijoe.repository]
remote = "https://github.com/refenv/cijoe/"
path = "{{ local.env.HOME }}/git/cijoe"
depth = 2
single_branch = true

In the workflow:

- name: repos
  uses: core.repository_prep
  with:
    depth: 2
    single_branch: true

[safl]

Lgtm

[coveralls]

Pull Request Test Coverage Report for Build 20332519363

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 11 of 13 (84.62%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.06%) to 78.482%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/cijoe/core/scripts/repository_prep.py	11	13	84.62%

Totals
Change from base Build 18189340355:	0.06%
Covered Lines:	1592
Relevant Lines:	2094

---

💛 - Coveralls

[glimchb]

maybe --recursive should also become an argument...