docs: add documentation for the commands: up, list, new and remove

docs/astro.config.mjs

@@ -12,6 +12,9 @@ export default defineConfig({
       editLink: {
         baseUrl: 'https://github.com/aboviq/emigrate/edit/main/docs/',
       },
+      components: {
+        PageTitle: './src/components/PageTitle.astro',
+      },
       sidebar: [
         {
           label: 'Introduction',
@@ -26,6 +29,27 @@ export default defineConfig({
             },
           ],
         },
+        {
+          label: 'Commands',
+          items: [
+            {
+              label: 'emigrate up',
+              link: '/commands/up/',
+            },
+            {
+              label: 'emigrate list',
+              link: '/commands/list/',
+            },
+            {
+              label: 'emigrate new',
+              link: '/commands/new/',
+            },
+            {
+              label: 'emigrate remove',
+              link: '/commands/remove/',
+            },
+          ],
+        },
         {
           label: 'Plugins',
           items: [