feat!: drop modules, general refactor and cleanup

runtime/queries/robot/folds.scm

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+[
+  (section)
+  (keyword_definition)
+  (test_case_definition)
+] @fold

runtime/queries/robot/highlights.scm

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+[
+  (comment)
+  (extra_text)
+] @comment
+
+[
+  (section_header)
+  (setting_statement)
+  (keyword_setting)
+  (test_case_setting)
+] @keyword
+
+(variable_definition (variable_name) @variable)
+(keyword_definition (name) @function)
+(test_case_definition (name) @function)
+
+(keyword_invocation (keyword) @function.call)
+(ellipses) @punctuation.delimiter
+
+(text_chunk) @string
+(inline_python_expression) @string.special
+[
+  (scalar_variable)
+  (list_variable)
+  (dictionary_variable)
+] @variable
+
+; Control structures
+
+[
+  "FOR"
+  "IN"
+  "IN RANGE"
+  "IN ENUMERATE"
+  "IN ZIP"
+  (break_statement)
+  (continue_statement)
+] @repeat
+(for_statement "END" @repeat)
+
+"WHILE" @repeat
+(while_statement "END" @repeat)
+
+[
+  "IF"
+  "ELSE IF"
+] @conditional
+(if_statement "END" @conditional)
+(if_statement (else_statement "ELSE" @conditional))
+
+[
+  "TRY"
+  "EXCEPT"
+  "FINALLY"
+] @exception
+(try_statement "END" @exception)
+(try_statement (else_statement "ELSE" @exception))

runtime/queries/robot/indents.scm

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+(keyword_definition) @indent.begin
+(test_case_definition) @indent.begin
+
+(for_statement) @indent.begin
+(for_statement "END" @indent.branch)
+(for_statement
+  right: (_ (arguments (continuation (ellipses) @indent.branch))))
+
+(while_statement) @indent.begin
+(while_statement "END" @indent.branch)
+
+(if_statement) @indent.begin
+(if_statement (elseif_statement) @indent.branch)
+(if_statement (else_statement) @indent.branch)
+(if_statement "END" @indent.branch)
+
+(try_statement) @indent.begin
+(try_statement (except_statement) @indent.branch)
+(try_statement (finally_statement) @indent.branch)
+(try_statement (else_statement) @indent.branch)
+(try_statement "END" @indent.branch)