Add :skip <workflow_name> command

Author: hwangsihu

.github/workflows/android.yml

@@ -22,6 +22,7 @@ on:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip android')"
     strategy:
       matrix:
         include:

.github/workflows/ios.yml

@@ -20,6 +20,7 @@ on:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip ios')"
     strategy:
       matrix:
         include:

.github/workflows/macos.yml

@@ -40,6 +40,7 @@ env:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip macos')"
     runs-on: macos-latest
 
     steps:

.github/workflows/smoketest.yml

@@ -46,6 +46,7 @@ env:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip smoketest')"
     runs-on: ubuntu-24.04
 
     steps:

.github/workflows/ubuntu.yml

@@ -54,6 +54,7 @@ env:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip ubuntu')"
     strategy:
       matrix:
         os: [ubuntu-22.04, ubuntu-24.04]

.github/workflows/windows.yml

@@ -65,6 +65,7 @@ env:
 
 jobs:
   build:
+    if: "!contains(github.event.head_commit.message || '', ':skip windows')"
     strategy:
       matrix:
         arch: [x86, x64]