chore: Re-use Twilio Rest Client for Organizations API

[tiwarishubham635]

Fixes

Re-uses twilio rest client for organization apis. Easier to use orgs API just like Public OAuth. No need for separate bearertoken files

Checklist

• I acknowledge that all my contributions will be made under the project's license
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please file a support ticket, or create a GitHub Issue in this repository.

[sonarqubecloud]

Quality Gate failed

Failed conditions
41.9% Coverage on New Code (required ≥ 80%)
7.3% Duplication on New Code (required ≤ 3%)
B Reliability Rating on New Code (required ≥ A)

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