Add option to swap the order of incoming and current changes in merge conflict resolver

Description

In my current workflow, the most common merge conflict is additions to the changelog of the project - any incoming change is already merged, thus should be ordered above the current change, however in the current implementation, Refined Github sorts it below the current change.

An example:

1. Chanelog contains item A and B at the beginning:

# CHANGELOG

- A
- B

1. A PR is opened, adding item D to the changelog:

# CHANGELOG

- A
- B
- D

1. Another PR is opened, and merged before the first PR is merged, making the incoming changelog look like this:

# CHANGELOG

- A
- B
- C

1. This causes the following merge conflict:

# CHANGELOG

- A
- B
<<<<<<< Incoming change
- D
=======
- C
>>>>>>> Current change

1. With the current behaviour of Refined Github, if both changes are accepted, their order wouldn’t be correct. This requires manual fixing. My recommendation is an extra button that swaps the order of the incoming and current changes, which results in the correctly ordered changelog list, with a single click:

# CHANGELOG

- A
- B
- C
- D

Screenshot

No response

Example URL

[cheap-glitch]

Looking at the code in resolve-conflicts.ts, this seems like a relatively easy feature to implement, so, why not.

[kidonng]

Refined GitHub is not Refined Git or a substitute to git tooling, period.

Most conflicts are not going to be resolved by simply swapping the changes so it doesn’t seem worth it to support such an uncommon action.