fix: PATCH method for Thread and Messages management

[vansangpfiev]

Describe Your Changes

This pull request includes changes to the HTTP methods used in the Messages and Threads controllers to better align with RESTful principles. The most important changes are:

HTTP method updates:

• engine/controllers/messages.h: Updated the ModifyMessage method to use the Patch HTTP method instead of Post.
• engine/controllers/threads.h: Updated the ModifyThread method to use the Patch HTTP method instead of Post.

Fixes Issues

• bug: PATCH method for Thread management in Cortex #1917

Self Checklist

• Added relevant comments, esp in complex areas
• Updated docs (for bug fixes / features)
• Created issues for follow-up changes or refactoring needed