Edit code block in place

[eslam-gomaa]

你在什么场景下需要该功能？ In what scenarios do you need this function?

Editing the code block in a different block than the review block is not very friendly, as it doesn't save the cursor position in some cases, also it doesn't allow to search with CTL + F in the code block

描述最优的解决方案 Describe the optimal solution

Allow to edit the code block in place, Like in Typora

描述候选解决方案 Describe the candidate solution

其他信息 Other information