Update gdscript queries (#4405)

* locals(gdscript): update locals

* folds(gdscript): add folds

* indents(gdscript): update indents with notes

* highlights(gdscript): update highlights

* docs(gdscript): add gdscript maintainer

* indents(gdscript): add ERROR auto indent

Co-authored-by: Amaan Qureshi <amaanq12@gmail.com>

* highlights(gdscript): use text.uri for get_node and node_path

* highlights(gdscript): add "@" of annotation as attribute

* highlights(gdscript): use keyword.operator for "new", match all attribute_call

* highlights(gdscript): update (underscore) and (pattern_open_ending)

---------

Co-authored-by: Amaan Qureshi <amaanq12@gmail.com>

queries/gdscript/indents.scm

@@ -1,24 +1,78 @@
 [
-  (if_statement)
+  (lambda)
+  (function_definition)
 
   (for_statement)
   (while_statement)
-
-  (parenthesized_expression)
-
-  (function_definition)
+  (if_statement)
   (class_definition)
+  (match_statement)
+  (pattern_section)
+  (setget)
+  (match_body)
+  (set_body)
+  (get_body)
 ] @indent
 
-((arguments) @aligned_indent
- (#set! "delimiter" "()"))
-((parameters) @aligned_indent
- (#set! "delimiter" "()"))
-
 [
-  ")"
-  "]"
-  "}"
   (elif_clause)
   (else_clause)
 ] @branch
+
+[
+ (string)
+ (comment)
+ (array)
+ (dictionary)
+ (parenthesized_expression)
+ (ERROR)
+] @auto
+
+[
+  (pass_statement)
+  (continue_statement)
+  (break_statement)
+  (return_statement)
+] @dedent
+
+[
+  (ERROR "[")
+  (ERROR "(")
+  (ERROR "{")
+] @indent
+
+;; This only works with expanded tabs.
+; ((parameters) @aligned_indent (#set! "delimiter" "()"))
+; ((arguments)  @aligned_indent (#set! "delimiter" "()"))
+
+;; The following queries either do not agree with the current body parsing or are
+;; attempted workarounds. Specifically as the last statement of a body. Opening
+;; a new line in between statements works well.
+;;
+;; The overall experience is poor, so I've opted for @auto.
+;;
+;; The gdscript parser will need to be patched to accommodate more interactive
+;; edits. As far as I can tell the parser greedily consumes whitespace
+;; as a zero-width token which causes trouble when inserting indents.
+
+;; This indents correctly with tabs.
+; (arguments) @indent
+; (parameters) @indent
+; (array) @indent
+; (dictionary) @indent
+; (parenthesized_expression) @indent
+
+;; Partial workaround for when the cursor is on the bracket character and a newline
+;; is created with <o>. Without this the newline is opened with extra
+;; indentation.
+; (body (_ (array "]" @indent_end) ) _)
+;; Problematic behaviors occur at the last statement of a body.
+;; with @dedent:
+;;   - [ | ] i<CR> will dedent ] to 0.
+;;   - [
+;;   ]| o will open new line at correct indentation.
+;; with @auto:
+;;   - [ | ] i<CR> same
+;;   - [
+;;   ]| o will open new line with extra indent.
+;(body (_ (array "]" @auto) ) .)