Fixed some performance issues

[Wouter01]

Description

This PR fixes an issue where the view would be reloaded too often. This happened because updateNSViewController is called too often. This mostly happens because of a change in the environment, which gets passed to the NSViewControllerRepresentable in the context variable.

Manual diffing is applied to check if any variables that matter have changed. If not, nothing is updated.

The initializer has also changed, a few variables are now just values instead of bindings. These don't have to be bindings, as the textview won't update variables.

Related Issues

CodeEditApp/CodeEdit#1247

Checklist

• I read and understood the contributing guide as well as the code of conduct
• The issues this PR addresses are related to each other
• My changes generate no new warnings
• My code builds and runs on my machine
• My changes are all related to the related issue above
• I documented my code

Screenshots

[austincondiff]

Looks good! Yeah if these variables will not ever be set from within, there really is no point in those bindings.