Syntax: Add support for KDL fenced code blocks

auto-v1/2-selection variant `kdl` as well as forced v1/v2 variants `kdl1` and `kdl2`

Author: eugenesvk

syntaxes/Markdown.sublime-syntax

@@ -1255,6 +1255,9 @@ contexts:
     - include: fenced-jade
     - include: fenced-julia
     - include: fenced-kotlin
+    - include: fenced-kdl
+    - include: fenced-kdl1
+    - include: fenced-kdl2
     - include: fenced-less
     - include: fenced-mermaid
     - include: fenced-nim
@@ -2609,6 +2612,72 @@ contexts:
         1: punctuation.definition.raw.code-fence.end.markdown
         2: meta.fold.code-fence.end.markdown
 
+  fenced-kdl:
+    - match: |-
+         (?x)
+          {{fenced_code_block_start}}
+          (?i:\s*(kdl))
+          {{fenced_code_block_trailing_infostring_characters}}
+      captures:
+        0: meta.code-fence.definition.begin.kdl.markdown-gfm
+        2: punctuation.definition.raw.code-fence.begin.markdown
+        5: constant.other.language-name.markdown
+        6: comment.line.infostring.markdown
+        7: meta.fold.code-fence.begin.markdown
+      embed: scope:text.kdl
+      embed_scope:
+        markup.raw.code-fence.kdl.markdown-gfm
+        text.kdl
+      escape: '{{fenced_code_block_escape}}'
+      escape_captures:
+        0: meta.code-fence.definition.end.kdl.markdown-gfm
+        1: punctuation.definition.raw.code-fence.end.markdown
+        2: meta.fold.code-fence.end.markdown
+
+  fenced-kdl1:
+    - match: |-
+         (?x)
+          {{fenced_code_block_start}}
+          (?i:\s*(kdl1))
+          {{fenced_code_block_trailing_infostring_characters}}
+      captures:
+        0: meta.code-fence.definition.begin.kdl.markdown-gfm
+        2: punctuation.definition.raw.code-fence.begin.markdown
+        5: constant.other.language-name.markdown
+        6: comment.line.infostring.markdown
+        7: meta.fold.code-fence.begin.markdown
+      embed: scope:text.kdl.1
+      embed_scope:
+        markup.raw.code-fence.kdl.markdown-gfm
+        text.kdl.1
+      escape: '{{fenced_code_block_escape}}'
+      escape_captures:
+        0: meta.code-fence.definition.end.kdl.markdown-gfm
+        1: punctuation.definition.raw.code-fence.end.markdown
+        2: meta.fold.code-fence.end.markdown
+
+  fenced-kdl2:
+    - match: |-
+         (?x)
+          {{fenced_code_block_start}}
+          (?i:\s*(kdl2))
+          {{fenced_code_block_trailing_infostring_characters}}
+      captures:
+        0: meta.code-fence.definition.begin.kdl.markdown-gfm
+        2: punctuation.definition.raw.code-fence.begin.markdown
+        5: constant.other.language-name.markdown
+        6: comment.line.infostring.markdown
+        7: meta.fold.code-fence.begin.markdown
+      embed: scope:text.kdl.2
+      embed_scope:
+        markup.raw.code-fence.kdl.markdown-gfm
+        text.kdl.2
+      escape: '{{fenced_code_block_escape}}'
+      escape_captures:
+        0: meta.code-fence.definition.end.kdl.markdown-gfm
+        1: punctuation.definition.raw.code-fence.end.markdown
+        2: meta.fold.code-fence.end.markdown
+
   fenced-less:
     - match: |-
          (?x)