feat: inject sigils

Based on elixir-lang#75 and elixir-lang#84 I'm assuming it's fine to inject more sigils.

I've included ones from
https://elixir-lang.org/blog/2025/08/18/interop-and-portability and a
couple others that seems popular.

Author: leandrocp

queries/injections.scm

@@ -2,7 +2,7 @@
 ((sigil
   (sigil_name) @_sigil_name
   (quoted_content) @injection.content)
- (#any-of? @_sigil_name "H" "LVN")
+ (#any-of? @_sigil_name "H" "LVN" "HOLO")
  (#set! injection.language "heex")
  (#set! injection.combined))
 
@@ -13,3 +13,47 @@
  (#eq? @_sigil_name "SQL")
  (#set! injection.language "sql")
  (#set! injection.combined))
+
+; Markdown
+(sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content
+ (#eq? @_sigil_name "MD")
+ (#set! injection.language "markdown"))
+
+; Zig
+(sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content
+ (#any-of? @_sigil_name "z" "Z")
+ (#set! injection.language "markdown"))
+
+; Python
+((sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content)
+ (#eq? @_sigil_name "PY")
+ (#set! injection.language "python")
+ (#set! injection.combined))
+
+; JavaScript
+((sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content)
+ (#eq? @_sigil_name "JS")
+ (#set! injection.language "javascript")
+ (#set! injection.combined))
+
+; Svelte
+(sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content
+ (#eq? @_sigil_name "V")
+ (#set! injection.language "svelte"))
+
+; Vue
+(sigil
+  (sigil_name) @_sigil_name
+  (quoted_content) @injection.content
+ (#eq? @_sigil_name "VUE")
+ (#set! injection.language "vue"))