perf(treesitter): smarter languagetree invalidation

Problem:
  Treesitter injections are slow because all injected trees are invalidated on every change.

Solution:
    Implement smarter invalidation to avoid reparsing injected regions.

    - In on_bytes, try and update self._regions as best we can. This PR just offsets any regions after the change.
    - Add valid flags for each region in self._regions.
    - Call on_bytes recursively for all children.
       - We still need to run the query every time for the top level tree. I don't know how to avoid this. However, if the new injection ranges don't change, then we re-use the old trees and avoid reparsing children.

This should result in roughly a 2-3x reduction in tree parsing when the comment injections are enabled.

scripts/lua2dox.lua

@@ -291,7 +291,7 @@ local types = { 'integer', 'number', 'string', 'table', 'list', 'boolean', 'func
 local tagged_types = { 'TSNode', 'LanguageTree' }
 
 -- Document these as 'table'
-local alias_types = { 'Range' }
+local alias_types = { 'Range4', 'Range6' }
 
 --! \brief run the filter
 function TLua2DoX_filter.readfile(this, AppStamp, Filename)