Support More Programming Languages and Indent Customization When Using Code Blocks

Hi team,

As the goal of RemNote is to build a all-in-one workspace, I assume support more programming languages will be a good way to give users a more seamless experience:

• Now, RemNote already supported lots of trending programming.
  I am learning Nix, so I would love to see that RemNote support it and more languages.

• Now, when I want to write a code block, I would use another editor to write and paste it back to RemNote as it doesn’t indent well and cannot choose to use spaces, tabs or indent sizes. It will be great if RemNote this by Rem (i.e. every code block can custom its own indent style and have a good default value to avoid repeatedly configuring).

Let me know if you are unclear about something I wrote above.