ci: Merge some GitHub Action yml files

* Merge dart-analyze.yml to flutter.yml.
* When the dart analyze hook fails don't try to build the apk.
* Merge cui-on-xxx.yml to cui.yml and remove "Archive apk" comments.

.github/workflows/cui-on-macos.yml

@@ -1,30 +0,0 @@
-name: CUI on macOS
-
-on:
-  push:
-    paths:
-      - 'src/*.cpp'
-
-jobs:
-  build:
-    runs-on: macos-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Export environment valuables
-        run: export
-
-      - name: Print clang version
-        run: g++ -v
-
-      # Build
-      - name: Build CUI
-        run: cd src; make -j build ARCH=x86-64
-
-      # Archive apk
-      - name: Archive CUI
-        uses: actions/upload-artifact@v2
-        with:
-          name: sanmill-for-macos
-          path: src/sanmill

.github/workflows/cui-on-ubuntu.yml

@@ -1,33 +0,0 @@
-name: CUI on Ubuntu
-
-on:
-  push:
-    paths:
-      - 'src/*.cpp'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Export environment valuables
-        run: export
-
-      - name: Print g++ version
-        run: g++ -v
-
-      - name: Create App version
-        run: git fetch --tags; git tag; git log -n1; bash -x ./version.sh
-
-      # Build
-      - name: Build CUI
-        run: cd src; make -j build ARCH=x86-64
-
-      # Archive apk
-      - name: Archive CUI
-        uses: actions/upload-artifact@v2
-        with:
-          name: sanmill-for-linux
-          path: src/sanmill

.github/workflows/cui-on-windows.yml

@@ -1,30 +0,0 @@
-name: CUI on Windows
-
-on:
-  push:
-    paths:
-      - 'src/*.cpp'
-
-jobs:
-  build:
-    runs-on: windows-latest
-
-    steps:
-      - uses: actions/checkout@v2
-
-      - name: Set up Cygwin
-        uses: egor-tensin/setup-cygwin@v3
-        with:
-          platform: x64
-          packages: make gcc-g++
-
-      # Build
-      - name: Build CUI
-        run: cd src; make -j build ARCH=x86-64
-
-      # Archive apk
-      - name: Archive CUI
-        uses: actions/upload-artifact@v2
-        with:
-          name: sanmill-for-cygwin
-          path: src/sanmill.exe

.github/workflows/cui.yml

@@ -0,0 +1,79 @@
+name: CUI
+
+on:
+  push:
+    paths:
+      - 'src/*.cpp'
+
+jobs:
+  cygwin-g++:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Cygwin
+        uses: egor-tensin/setup-cygwin@v3
+        with:
+          platform: x64
+          packages: make gcc-g++
+
+      # Build
+      - name: Build with cygwin-g++
+        run: cd src; make -j build ARCH=x86-64
+
+      # Archive
+      - name: Archive
+        uses: actions/upload-artifact@v2
+        with:
+          name: sanmill_cygwin-g++.exe
+          path: src/sanmill.exe
+
+  linux-g++:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Export environment valuables
+        run: export
+
+      - name: Print g++ version
+        run: g++ -v
+
+      - name: Create version
+        run: git fetch --tags; git tag; git log -n1; bash -x ./version.sh
+
+      # Build
+      - name: Build with linux-g++
+        run: cd src; make -j build ARCH=x86-64
+
+      # Archive
+      - name: Archive
+        uses: actions/upload-artifact@v2
+        with:
+          name: sanmill_linux-g++
+          path: src/sanmill
+
+  darwin-g++:
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Export environment valuables
+        run: export
+
+      - name: Print g++ version
+        run: g++ -v
+
+      # Build
+      - name: Build with darwin-g++
+        run: cd src; make -j build ARCH=x86-64
+
+      # Archive
+      - name: Archive
+        uses: actions/upload-artifact@v2
+        with:
+          name: sanmill_darwin-g++
+          path: src/sanmill

.github/workflows/dart-analyze.yml

@@ -1,23 +0,0 @@
-name: Dart Analyze
-
-on:
-  push:
-    paths:
-      - 'src/ui/flutter_app/**'
-
-jobs:
-  linter:
-    runs-on: ubuntu-latest
-    name: Lint flutter code
-    steps:
-    - name: Checkout code
-      uses: actions/checkout@v2
-    - name: Set up Flutter
-      uses: subosito/flutter-action@v1
-    - run: bash -x ./flutter-init.sh
-    - run: cp -f ./src/ui/flutter_app/analysis_options.yaml ./
-    - name: Analyze Flutter
-      uses: ValentinVignal/action-dart-analyze@v0.11
-      with:
-        fail-on: 'format'
-        working-directory: src/ui/flutter_app

.github/workflows/flutter.yml

@@ -6,8 +6,25 @@ on:
       - 'src/ui/flutter_app/**'
 
 jobs:
+  linter:
+    runs-on: ubuntu-latest
+    name: Lint flutter code
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Set up Flutter
+      uses: subosito/flutter-action@v1
+    - run: bash -x ./flutter-init.sh
+    - run: cp -f ./src/ui/flutter_app/analysis_options.yaml ./
+    - name: Analyze Flutter
+      uses: ValentinVignal/action-dart-analyze@v0.11
+      with:
+        fail-on: 'format'
+        working-directory: src/ui/flutter_app
+
   build:
     runs-on: ubuntu-latest
+    needs: linter
 
     # Note that this workflow uses the latest stable version of the Dart SDK.
     # Docker images for other release channels - like dev and beta - are also