Highlight matching bracket in files of unknown type

[fvacek]

It would be nice if Helix can select matching bracket even in documents with grammar not defined like *.txt. The functionality is here already, because ma( will select all between surrounding ( and ).

I'm currently playing with tree-sitter grammar definition for CPON files and test/main.txt contains nested S-expressions with many braces, the possibility to see matching bracket would help me a lot.

[fvacek]

#1946