♻️ Move 'src' directory to git submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "src"]
+	path = src
+	url = https://git.kaki87.net/KaKi87/template-vue3-src.git

src

@@ -0,0 +1 @@
+Subproject commit 8891ad07a6b411b6e79e8d785722e486e2f7e1ae

src/app.js

@@ -1,14 +0,0 @@
-import App from './components/App.js';
-
-export const createMyApp = ({ createApp }) => {
-    const app = createApp(App);
-
-    app.mixin({
-        'mounted': function(){
-            if(this.style && !document.adoptedStyleSheets.includes(this.style))
-                document.adoptedStyleSheets.push(this.style);
-        }
-    });
-
-    return app;
-};

src/components/App.css

@@ -1,3 +0,0 @@
-.App {
-    font-family: sans-serif;
-}

src/components/App.js

@@ -1,16 +0,0 @@
-import AppMain from './AppMain.js';
-
-import style from './App.css' assert { type: 'css' };
-
-export default {
-    components: {
-        AppMain
-    },
-    'data': () => ({
-        style
-    }),
-    template: `
-        <AppMain>
-        </AppMain>
-    `
-}

src/components/AppMain.js

@@ -1,15 +0,0 @@
-import AppMainMessage from './AppMainMessage.js';
-
-export default {
-    components: {
-        AppMainMessage
-    },
-    'data': () => ({
-        message: 'Hello, World !'
-    }),
-    template: `
-        <AppMainMessage
-            :message="message"
-        ></AppMainMessage>
-    `
-};

src/components/AppMainMessage.css

@@ -1,3 +0,0 @@
-.App__Main__Message {
-    font-style: italic;
-}

src/components/AppMainMessage.js

@@ -1,15 +0,0 @@
-import style from './AppMainMessage.css' assert { type: 'css' };
-
-export default {
-    props: {
-        message: String
-    },
-    'data': () => ({
-        style
-    }),
-    template: `
-        <p class="App__Main__Message">
-            {{ message }}
-        </p>
-    `
-};