fix: Remove map file and update .gitignore

- Remove accidentally committed firmware.map file
- Add *.map to .gitignore to exclude linker map files
- Add bloat report directories to .gitignore
- Prevent build artifacts from being committed

Author: rusty1968

.gitignore

@@ -1 +1,8 @@
 /target
+
+# Map files generated by linker
+*.map
+
+# Bloat analysis reports
+target/bloat-reports/
+target/*-bloat-reports/