Microsoft Teams Chat Handler

[MinuraPunchihewa]

Description

This PR refactors the existing Microsoft Teams integrations and converts it to a Chat handler.

Fixes #7529

Type of change

• 📢 Breaking change (fix or feature that would cause existing functionality not to work as expected)
• 📄 This change requires a documentation update

Verification Process

To ensure the changes are working as expected:

• Test Location: Specify the URL or path for testing.
• Verification Steps: Outline the steps or queries needed to validate the change. Include any data, configurations, or actions required to reproduce or see the new functionality.

Additional Media:

• I have attached a brief loom video or screenshots showcasing the new functionality or change.

https://www.loom.com/share/c18aac43965d454791d5c7533c8246d9?sid=7b059a6d-768a-4142-9aa5-af1cf392b72f

Checklist:

• My code follows the style guidelines(PEP 8) of MindsDB.
• I have appropriately commented on my code, especially in complex areas.
• Necessary documentation updates are either made or tracked in issues.
• Relevant unit and integration tests are updated or added.

[MinuraPunchihewa]

Hey @ZoranPandovski,
I have added quite a few mocked test here. Can you please have a look and let me know what you think?
There are about 35. All of them may not be necessary.