Code-Actions improvements

[Zabuzard]

Motivation

We recently added code-actions with auto-detection on all code messages. The feature is cool, but triggers too often and hence annoys.

This PR attempts to fix most of the problems.

Overview

The PR essentially adds 3 features:

1. the auto-detection is reduced to
   • only detect messages in help threads
   • only detect code with at least 3 lines of code
2. therefore, add a message context command for helpers to manually register code messages
3. add a delete button

Auto-detection

The changes on the auto-detection are straightforward. To improve the code a bit, it has been moved out into its own class.

Command

The main advantages of the context command are:

• allows adding messages outside of help-threads if desired
• allows adding messages in help threads with less than 3 lines, if desired
• allows adding messages without any code-block (this is huge)

Delete

Further, a delete-button has been added to get rid of the message if it appears albeit not wanted:

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[Zabuzard]

Speeding this up a bit since its annoying people lol. Tais review is enough, cheers