[Improvement] improve github loader

[deven298]

Description

This PR adds functionality to load issues and PR from github repos.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (does not change functionality, e.g. code style improvements, linting)
• Documentation update

How Has This Been Tested?

• Unit Test
• Test Script (check docs)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Made sure Checks passed

[codecov]

Codecov Report

Attention: 138 lines in your changes are missing coverage. Please review.

Comparison is base (406c46e) 65.13% compared to head (af222f0) 64.34%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
embedchain/loaders/github.py	15.43%	137 Missing ⚠️
embedchain/loaders/discord.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #984      +/-   ##
==========================================
- Coverage   65.13%   64.34%   -0.79%     
==========================================
  Files         118      118              
  Lines        4302     4406     +104     
==========================================
+ Hits         2802     2835      +33     
- Misses       1500     1571      +71     

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[deshraj]

Is this going to strip the new lines?

[deshraj]

Not sure if this is still needed but feel free to change in the follow up PR.

[deshraj]

Looks good generally. Left some minor comments.

[deshraj]

@deven298 I am a bit confused with the type as code and repo. What is the difference between these two? We should clarify this in the documentation.

[deshraj]

Sorry, closed the pull request by mistake.

[deven298]

@deshraj code type is for searching code and repo is for searching repos on github. For code search query is lexically searched through all the files in the repo, while repo will only give us repo names and details.