Add .git-blame-ignore-revs

Allows ignoring code reformatting and similar changes

Author: geo2a

.git-blame-ignore-revs

@@ -0,0 +1,9 @@
+### NOTE
+# Run `git config blame.ignoreRevsFile .git-blame-ignore-revs`
+# from the repository's root to tell `git blame` to ignore
+# the commits below.
+
+# 2025
+########################################
+# Format with fourmolu
+2864041469d0270a663deb7923b109d83da4b01d