feat: inject sigils #86
                
     Merged
            
            
          
  Add this suggestion to a batch that can be applied as a single commit.
  This suggestion is invalid because no changes were made to the code.
  Suggestions cannot be applied while the pull request is closed.
  Suggestions cannot be applied while viewing a subset of changes.
  Only one suggestion per line can be applied in a batch.
  Add this suggestion to a batch that can be applied as a single commit.
  Applying suggestions on deleted lines is not supported.
  You must change the existing code in this line in order to create a valid suggestion.
  Outdated suggestions cannot be applied.
  This suggestion has been applied or marked resolved.
  Suggestions cannot be applied from pending reviews.
  Suggestions cannot be applied on multi-line comments.
  Suggestions cannot be applied while the pull request is queued to merge.
  Suggestion cannot be applied right now. Please check back later.
  
    
  
    
Based on #75 and #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, https://github.com/nvim-treesitter/nvim-treesitter/blob/main/runtime/queries/elixir/injections.scm, and a couple others that seems popular.
Note that
HOLOtemplates are not HEEx but that's the closest language, although I'm not sure about it.