Add updateAnnotatedFile property

[aoisupersix]

Fixes #131

This PR adds updateAnnotatedFile property to @OpenApi() annotation.

When the timestamp is forcibly added or updated to the @OpenApi() annotated class, frequent differences occur in source control. Therefore, by adding the updateAnnotatedFile property, if false is set, the addition or update of the timestamp will not be performed.

@Openapi(
  ...
  updateAnnotatedFile: false,
)

Default is true to keep current behavior.

The operation was checked by uncommenting in openapi-generator/pubspec.yaml.

# dependency_overrides:
#  openapi_generator_annotations:
#    path: ../openapi-generator-annotations

[Rick-VA]

We tested it on 5 APIs, and it worked perfectly. Thanks

[DmitrySboychakov]

Also interested in this. When this can be merged?

[tjarvstrand]

Great change! Please merge :)

[aoisupersix]

This PR is blocked because it requires a review from a user with write permissions.
Also the package update process will likely be necessary after merge.
Therefore need to wait for owner (@gibahjoe) to respond.

[tjarvstrand]

@aoisupersix Yes, sorry, my comment was meant for @gibahjoe :)

[gibahjoe]

I am soo sorry, been busy with studies all year.

The downside of this PR is that you will need to manually update the file containing the annotation before build runner will pick it up again next time there are changes. But I understand why you need more control.