* Renamed `arcade_arithmetic` to `arcade_math`
* Deleted `arcade_github` toolkit for the next release. This will be
reintroduced later.
* Added 5 tools to `arcade_x` toolkit
- post_tweet
- delete_tweet_by_id
- search_recent_tweets_by_username
- search_recent_tweets_by_keywords
- lookup_single_user_by_username
# PR Description
## Summary
Changes include renaming the `arcade_gmail` toolkit to `arcade_google`,
adding unit tests for Google toolkit, add new tools to the Google
toolkit.
## Changes
### Makefile
- Added a new `make test-toolkits` target to iterate over all toolkits
and run pytest on each one.
### Added new tools for the google toolkit
1. `send_email`
This tool sends an email using the Gmail API.
2. `write_draft_email`
This tool creates a draft email using the Gmail API.
3. `update_draft_email`
This tool updates an existing draft email using the Gmail API.
4. `send_draft_email`
This tool sends a draft email using the Gmail API.
5. `delete_draft_email`
This tool deletes a draft email using the Gmail API.
6. `list_draft_emails`
This tool retrieves a list of draft emails using the Gmail API.
7. `list_emails_by_header`
This tool searches for emails by a specific header using the Gmail API.
- `sender`: The sender's email address to search for.
- `limit`: The maximum number of emails to retrieve.
8. `list_emails`
This tool retrieves a list of emails using the Gmail API.
9. `trash_email`
This tool moves an email to the trash using the Gmail API.
