v1.60: Add JSON Loader to mailmerge

Adds a JSON Loader to mailmerge, to allow data to pulled in from JSON files which might have arrays, etc.

These arrays can then be used in the template files (as was done for MaDs).

NOTE: Email addresses must still be singular, space separated strings. If the emails list (or the BCC/CC fields as well) is an array, the program will crash as it does not expect that.

Don't call post-send hook in test mode

🩹 Fixes

• don't call post send hook in test mode (bf97bf1)

Add -t switch for test mode

Adds a new test mode to the mail merge tool to allow sending emails to test mail addresses before the real sent

Add --only & moving of drafts

• Adds new --only flag to only send a set number of emails
• Moves draft uploads to a folder to prevent re-upload.

Initial release

The initial release of docsoc-tools.

These tools are included with complete docs:

1. @docsoc/util: common utilities
2. @docsoc/mailmerge: library for mailmerging
3. @docsoc/mailmerge-cli: CLI for mailmerging
4. Rust clickup calendar sync tool