Allow passed authentication params on init

[kaosx5s]

Description

Thanks for contributing this Pull Request. Make sure that you send in this Pull Request to the master branch of this repository, add a brief description, and tag the relevant issue(s) and PR(s) below.

• Relevant Issues :

• What Changed and Why? :

  • Adds support to pass a git token
  • Adds support to pass a git username and git password

• Type of change :

  • New feature
  • Bug fix for existing feature
  • Code quality improvement
  • Addition or Improvement of tests
  • Addition or Improvement of documentation

• Other:

  • Add unit tests
  • Add documentation

[AgarFu]

let's be consistent with the options we provide, if we want to allow passing credentials via constructor parameters, let's allow all of them.

Then we can do something like:

def __ init__(self, username=None, password=None, token=None):
  username = os.environment.get('GITHUB_USERNAME', username)
  password = os.environment.get('GITHUB_PASSWORD', password)
  token = os.environment.get('GITHUB_TOKEN', token)
  ...
  # Check for credentials
  # Instantiate the client

[codecov-commenter]

Codecov Report

Merging #41 (f650965) into master (5d59323) will increase coverage by 3.49%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #41      +/-   ##
==========================================
+ Coverage   77.64%   81.13%   +3.49%     
==========================================
  Files          11       11              
  Lines         492      493       +1     
  Branches       73       77       +4     
==========================================
+ Hits          382      400      +18     
+ Misses         96       76      -20     
- Partials       14       17       +3     

Files	Coverage Δ
gordian/repo.py	78.36% <100.00%> (+10.12%)	⬆️

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[coreycaverly]

LGTM

[coreycaverly]

@AgarFu need you to approve changes.

This was addressed by @kaox5s