Add .gitattributes to enforce LF line endings for consistent reviewmark fingerprints (#71)

* Initial plan

* Add .gitattributes to enforce LF line endings for consistent reviewmark fingerprints

Co-authored-by: Malcolmnixon <1863707+Malcolmnixon@users.noreply.github.com>
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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Malcolmnixon <1863707+Malcolmnixon@users.noreply.github.com>

Author: Copilot

.gitattributes

@@ -0,0 +1,7 @@
+# Set default behavior: normalize line endings to LF on checkout for all text files.
+# This ensures consistent SHA256 fingerprints for reviewmark across all platforms.
+* text=auto eol=lf
+
+# Windows batch files require CRLF line endings to function correctly.
+*.bat text eol=crlf
+*.cmd text eol=crlf