Actions to initiate JSON patch files

[fstaudt]

Actions should be available to:

• Create JSON Patch for published schema (values.schema.patch.json or values.schema.patch.yaml)
• Create JSON Patch for aggregated schema (aggregated-values.schema.patch.json or aggregated-values.schema.patch.yaml)

If it doesn't exist, JSON patch should be created with default content:
JSON

[
  {}
]

YAML

- 

JSON patch file should be opened in editor by the action.