Add BridgeExtContext.delete() method

[baronkobama]

Summary

This PR attempts to add a BridgeExtContext.delete() method. The method itself only tries to delete if a response has been made and currently doesn't raise an exception if a response has not been made.

The ApplicationContext.delete() method now has new documentation and allows for the delay parameter.

Closes #1343

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...)

[Dorukyum]

Small change for consistency