See pending changes in Altinn Studio Designer

[RonnyB71]

Description

As an app developer who has been on vacation for a couple of weeks I would like to se the current pending changes I have in Studio that I forgot to commit before I went on vacation.

I have this icon telling me I have changes, but I'm not sure what they are.

Basically a git status and potentially a git diff would be nice:)

Additional Information

We are splitting this issue into two tasks:

### Tasks
- [x] Make it possible to see what files are changed and there statuses #13095
- [x] [ ] Make it possible to see what changes are made within the actual files (git diff) #[13124](https://github.com/Altinn/altinn-studio/issues/13124)

No response

[Gunnar-Solli-Olsen]

This feature would be used if implemented, unknown changes are a point of friction between local development and altinn studio. Would love it if the feature was added.

Regards, Gunnar 😄

[nkylstad]

The response from the status endpoint already provides the first part of this - the overview of changed files. So part 1 would be:

• display a list of changed files (with some descriptive texts)

Part 2:

• Add endpoint for fetching git diff, in same way as git status (SourceControlSI)
• Find some way to display the git diff in a good way. Maybe there are some existing patterns/packages we could use?

[standeren]

Opening this again since it is only one out of two tasks that are solved:

13124 is remaining

[ErlingHauan]

Issue #13124 has been solved in #13163 by @standeren 👏