improve autocomplete within code blocks

[daiyam]

Description

This change separates the autocomplete's configuration between generic markdown and with code blocks.
It allows to disable autocomplete on * or $ characters in code blocks.

Issue fixed

• Disable autocomplete within code blocks #2221

Type of changes

• ⚪ Bug fix (Change that fixed an issue)
• ⚪ Breaking change (Change that can cause existing functionality to change)
• 🔘 Improvement (Change that improves the code. Maybe performance or development improvement)
• ⚪ Feature (Change that adds new functionality)
• ⚪ Documentation change (Change that modifies documentation. Maybe typo fixes)

Checklist:

• 🔘 My code follows the project code style
• ⚪ I have written test for my code and it has been tested
• 🔘 All existing tests have been passed
• ⚪ I have attached a screenshot/video to visualize my change if possible

[daiyam]

I've added the support for the new preferences fields introduced by #2586

[Rokt33r]

I'm going to review this in this weekend.

[ZeroX-DG]

@daiyam can you resolve conflict please? 👍

[daiyam]

@ZeroX-DG Here you are are ;) I've even used the newest version of of the addon closebrackets.js which adds the new option closeBefore .
You can read more about it at codemirror/codemirror5@0c5c59c

[ZeroX-DG]

LGTM 🎉