Auto collapse diff of generated and less important code
### Description
Some languages (e.g. C#) generating a lot of code if you are using Visual Studio.
It would be great to auto collapse those auto generated files by default in diff view.
### Proposal
Collapse auto generated code files by default in diff views:
* `*.resx`
* `*.Designer.cs`
* `*.meta` - Unity
* ..
So you can focus on the really important parts of the code.
GitHub does it already:
### Links / references
[Example commit on GitHub](https://github.com/dockpanelsuite/dockpanelsuite/commit/28fcdfeaa9aff99c25ae12a47adee5bb70cbf8f6)
/cc @smcgivern @victorwu
issue