change: Add TagBot workflow

[kshyatt-aws]

Issue #, if available: N/A

Description of changes: Adds the workflow for TagBot. This won't be triggered until we onboard to the TagBot action and start registering and tagging versions at a Julia registry like General that has its TagBotTrigger workflow enabled.

Testing done: N/A (this is the standard workflow format)

Merge Checklist

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General

• [x] I have read the CONTRIBUTING doc
• [x] I used the commit message format described in CONTRIBUTING
• [x] I have updated any necessary documentation, including READMEs and API docs (if appropriate)

Tests

• [x] I have added tests that prove my fix is effective or that my feature works (if appropriate)
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