feature/question: support one otter buffer per code block

[primalmotion]

When I have multiple Lua blocks injected in a YAML file, otter merges them all into one virtual buffer. This makes the LSP think they're all in the same scope, which causes annoying false positives.
What happens now:

tasks:
  - name: task1
    script: |-
      local x = 1
      print(x)
  
  - name: task2
    script: |-
      local x = 2  -- LSP complains about redefined-local
      print(x)

These are completely separate scripts that run independently, but lua_ls sees them as one file and warns about redefined variables.

How can I make it so every different lua code in here be completely independent?