add: full multi-tenancy control

public/installer/build/assets/spinner-51c5cf50.svg

@@ -0,0 +1,18 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
+    <circle
+        cx="12"
+        cy="12"
+        r="10"
+        stroke="currentColor"
+        stroke-opacity="0.25"
+        stroke-width="4"
+    >
+    </circle>
+
+    <path
+        fill="currentColor"
+        d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"
+        stroke-opacity="0.75"
+    >
+    </path>
+</svg>

public/installer/build/manifest.json

@@ -0,0 +1,40 @@
+{
+  "src/Resources/assets/css/app.css": {
+    "file": "assets/app-e0866a20.css",
+    "isEntry": true,
+    "src": "src/Resources/assets/css/app.css"
+  },
+  "src/Resources/assets/fonts/icomoon.eot": {
+    "file": "assets/icomoon-1bcfcf1d.eot",
+    "src": "src/Resources/assets/fonts/icomoon.eot"
+  },
+  "src/Resources/assets/fonts/icomoon.svg": {
+    "file": "assets/icomoon-c96ab384.svg",
+    "src": "src/Resources/assets/fonts/icomoon.svg"
+  },
+  "src/Resources/assets/fonts/icomoon.ttf": {
+    "file": "assets/icomoon-c6be70b2.ttf",
+    "src": "src/Resources/assets/fonts/icomoon.ttf"
+  },
+  "src/Resources/assets/fonts/icomoon.woff": {
+    "file": "assets/icomoon-81aea726.woff",
+    "src": "src/Resources/assets/fonts/icomoon.woff"
+  },
+  "src/Resources/assets/images/favicon.ico": {
+    "file": "assets/favicon-a99d4e55.ico",
+    "src": "src/Resources/assets/images/favicon.ico"
+  },
+  "src/Resources/assets/images/krayin-logo.svg": {
+    "file": "assets/krayin-logo-4636add7.svg",
+    "src": "src/Resources/assets/images/krayin-logo.svg"
+  },
+  "src/Resources/assets/images/spinner.svg": {
+    "file": "assets/spinner-51c5cf50.svg",
+    "src": "src/Resources/assets/images/spinner.svg"
+  },
+  "src/Resources/assets/js/app.js": {
+    "file": "assets/app-aec2df31.js",
+    "isEntry": true,
+    "src": "src/Resources/assets/js/app.js"
+  }
+}