FR: Mermaid Tree View

[TolgaKerem07]

I think the visual power of the Mermaid view is the best among the view types. But a big disadvantage is that it can only be used as code in a specific note. I would like to be able to open it in a separate window like tree view or matrix view. The biggest advantages of this:

1- Keeping notes free of code and more atomic

2- Updating the mermaid window according to the note I am working on, so that I can see the current hierarchy of all my notes while I am working on them.

3- Ability to close the window with a single click while working on the note itself and not the hierarchy