feat!: drop modules, general refactor and cleanup

runtime/queries/htmldjango/folds.scm

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+[
+  (paired_statement)
+  (paired_comment)
+] @fold

runtime/queries/htmldjango/highlights.scm

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+; adapted from https://github.com/interdependence/tree-sitter-htmldjango
+
+[
+  (unpaired_comment)
+  (paired_comment)
+] @comment @spell
+
+[
+  "{{" "}}"
+  "{%" "%}"
+  (end_paired_statement)
+] @punctuation.bracket
+
+[
+ "end"
+ (tag_name)
+] @function
+
+(variable_name) @variable
+
+(filter_name) @method
+(filter_argument) @parameter
+
+(keyword) @keyword
+
+(operator) @operator
+(variable "|" @operator)
+(paired_statement "=" @operator)
+(keyword_operator) @keyword.operator
+
+(number) @number
+
+(boolean) @boolean
+
+(string) @string

runtime/queries/htmldjango/indents.scm

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+(paired_statement) @indent.begin
+(end_paired_statement) @indent.end
+(branch_statement) @indent.branch

runtime/queries/htmldjango/injections.scm

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+((content) @injection.content
+ (#set! injection.language "html")
+ (#set! injection.combined))