feat: add git hook sign

Signed-off-by: Xinwei Xiong(cubxxw-openim) <3293172751nss@gmail.com>

.github/workflows/openim-ci.yml

@@ -19,7 +19,7 @@ jobs:
 
     strategy:
       matrix:
-        go_version: [1.18, 1.19, 1.20]
+        go_version: ['1.18', '1.19', '1.20']
         os: [ubuntu-latest, macOS-latest]
 
     steps:

scripts/githooks/commit-msg

@@ -76,3 +76,17 @@ then
     printError "https://gist.github.com/cubxxw/126b72104ac0b0ca484c9db09c3e5694#file-githook-md"
     exit 1
 fi
+
+### Add Sign-off-by line to the end of the commit message
+# Get local git config
+NAME=$(git config user.name)
+EMAIL=$(git config user.email)
+
+# Check if the commit message contains a sign-off line
+grep -qs "^Signed-off-by: " "$1"
+SIGNED_OFF_BY_EXISTS=$?
+
+# Add "Signed-off-by" line if it doesn't exist
+if [ $SIGNED_OFF_BY_EXISTS -ne 0 ]; then
+  echo -e "\nSigned-off-by: $NAME <$EMAIL>" >> "$1"
+fi