Syntax Highlighting without `vim-helm` plugin

[mrjosh]

We need to use our own Syntax Highlighting instead of using vim-helm plugin

[qvalentin]

I guess we won't be able to create an editor agnostic solution, but for neovim https://github.com/ngalaiko/tree-sitter-go-template/pull/13 is looking promising.

[qvalentin]

@mrjosh did you check out https://github.com/ngalaiko/tree-sitter-go-template? I would say we can close this issue, since highlighting is not really in the scope of a lsp server.