Add text objects to extensions (#21488)

Release Notes:

- Adds textobject support to erlang, haskell, lua, php, prisma, proto,
toml, and zig

extensions/haskell/languages/haskell/textobjects.scm

@@ -0,0 +1,12 @@
+(comment)+ @comment.around
+
+[
+  (adt)
+  (type_alias)
+  (newtype)
+] @class.around
+
+(record_fields "{" (_)* @class.inside "}")
+
+((signature)? (function)+) @function.around
+(function rhs:(_) @function.inside)