MM-13026 : Migrate mattermost-utilities/github_jira_tools from python to go

[VineetKSingh]

Summary

• Develop functionality for creating labels on github from given input.
• Renaming of existing github folder to github_utils. The folder name clashes with the go github lib making it difficult to navigate.
• Updated github dependency version from v35 to v52.
• Updated code according to the new github dependency.
• Fixed the creategithub issue code throwing http 415.

The code has been tested with personal atlassian tokens, board and custom fields to make sure it generates github issues, applies the required labels and writes the github issue link back to jira custom field.

JIRA: https://mattermost.atlassian.net/browse/MM-19977

Ticket Link: mattermost/mattermost#13026

[mattermost-build]

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[VineetKSingh]

/check-cla

[mattermost-build]

This PR has been automatically labelled "stale" because it hasn't had recent activity.
A core team member will check in on the status of the PR to help with questions.
Thank you for your contribution!

[M-ZubairAhmed]

@jespino can you please look at this to see if this is still relevant