feat(markdown)!: switch to split parser (#3048)

* switch to split markdown parser with separate block and inline parsers to improve performance
* add exclude_children! directive (useful for something like Injected markdown incorrectly highlights indented docstrings #2212)
* split markdown queries into block and inline ones and add the injection for inline into block grammar
* add include_dir option to parser configs (needed because the two grammars don't live in the repos root directory)

BREAKING CHANGE: downstream queries need to be adapted to new parser

queries/markdown_inline/highlights.scm

@@ -0,0 +1,67 @@
+;; From MDeiml/tree-sitter-markdown
+[
+  (code_span)
+  (link_title)
+] @text.literal
+
+[
+  (emphasis_delimiter)
+  (code_span_delimiter)
+] @punctuation.delimiter
+
+(emphasis) @text.emphasis
+
+(strong_emphasis) @text.strong
+
+[
+  (link_destination)
+  (uri_autolink)
+] @text.uri
+
+[
+  (link_label)
+  (link_text)
+  (image_description)
+] @text.reference
+
+[
+  (backslash_escape)
+  (hard_line_break)
+] @string.escape
+
+; "(" not part of query because of
+; https://github.com/nvim-treesitter/nvim-treesitter/issues/2206
+; TODO: Find better fix for this
+(image ["!" "[" "]" "("] @punctuation.delimiter)
+(inline_link ["[" "]" "("] @punctuation.delimiter)
+(shortcut_link ["[" "]"] @punctuation.delimiter)
+
+([
+  (code_span_delimiter)
+  (emphasis_delimiter)
+] @conceal
+(#set! conceal ""))
+
+; Conceal inline links
+(inline_link
+  [
+    "["
+    "]"
+    "("
+   (link_destination)
+    ")"
+] @conceal
+(#set! conceal ""))
+
+
+; Conceal image links
+(image
+  [
+    "!"
+    "["
+    "]"
+    "("
+   (link_destination)
+    ")"
+] @conceal
+  (#set! conceal ""))

queries/markdown_inline/injections.scm

@@ -0,0 +1 @@
+((html_tag) @html)