WIP hydra editor built using Codemirror6

Code inspiration from: https://github.com/folz/hiasynth/tree/main/packages/editor

To implement:

• flash highlighting on evaluation ///- autocomplete ///- custom keymaps
• internationalization
• bundle as module as well as standalone editor with iframe API that can be used along with hydra-synth

Already implemented:

• bracket matching
• multi-selection
• key command for commenting code

Autocomplete ideas:

• include common code snippets
• allow to prepopulate with random reasonable values, or with defaults
• snippet completion? https://github.com/codemirror/lang-javascript/blob/main/src/snippets.ts
• move parameter hints to tooltips rather than autocomplete
• draggable parameters similar to glslEditor / chrome dev tools (widget decoration)