all: force consistent line endings

Ensure that files in the repository use Unix-style line endings
throughout.

See https://git-scm.com/docs/gitattributes#_checking_out_and_checking_in

Signed-off-by: Lorenz Bauer <[email protected]>

Author: lmb

Diff for: .gitattributes

@@ -1 +1,4 @@
+# Force line ending normalisation
+*	text=auto
+# Show types.go in the PR diff view by default
 internal/sys/types.go linguist-generated=false