Remove migration name from inside the JSON and rely on filename as source of truth. #715
Description
Currently we have both the file name e.g. 20250101123456.json and also:
"name": "20250101123456",
Inside the JSON.
When trying to use pgroll I've found that keeping them in sync is a little annoying and I'd rather "name" wasn't present at all.
Example:
pgroll convert ....
Returns JSON including the name and I now need to read the name to write the file, or modify the JSON if I want a different name.
Example:
I create a pgroll migration by hand, I accidentally mismatched the file name and the migration name.