Script updates.

- add a mode to disable finalization steps if they were already merged,
- add the extension version into commit message.

Bug: 243966946
Test: local run
Change-Id: I51505e5d5715b56f3b385d714e1aabaae06f58ed
diff --git a/tools/finalization/step-1.sh b/tools/finalization/step-1.sh
index cf21e45..0dd4b3a 100755
--- a/tools/finalization/step-1.sh
+++ b/tools/finalization/step-1.sh
@@ -9,7 +9,7 @@
         if [[ $(git status --short) ]]; then
             repo start "$FINAL_PLATFORM_CODENAME-SDK-Finalization" ;
             git add -A . ;
-            git commit -m "$FINAL_PLATFORM_CODENAME is now $FINAL_PLATFORM_SDK_VERSION" \
+            git commit -m "$FINAL_PLATFORM_CODENAME is now $FINAL_PLATFORM_SDK_VERSION and extension version $FINAL_MAINLINE_EXTENSION" \
                        -m "Ignore-AOSP-First: $FINAL_PLATFORM_CODENAME Finalization
 Bug: $FINAL_BUG_ID
 Test: build";