[Improvement] Ignore autogenerated files in yaml/ directory

[Bugfunder]

Add the yaml/ directory to the .gitignore file to ensure these autogenerated files remain local to each installation.

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Diff for .gitignore

1 diff --git a/.gitignore b/.gitignore
2 --- a/.gitignore
3 +++ b/.gitignore
4 @@ -8,3 +8,4 @@
5 dev/package-lock.json
6 .idea
7 +yaml/