docs: move build instructions from README to BUILDING.md

- Move detailed setup and build instructions from README.md to BUILDING.md
- Add concise reference to BUILDING.md in README.md
- Keep testing and other documentation in README.md
- Improve organization of documentation by separating build-specific content

src/vite.config.utils.js

@@ -1,6 +1,6 @@
 import * as path from "path";
 import { promises as fs } from "fs";
-import { fileURLToPath } from 'url';
+import { fileURLToPath } from "url";
 
 export async function loadAppConfig() {
   const packageJson = await loadPackageJson();
@@ -34,15 +34,16 @@ export async function loadAppConfig() {
             sizes: "512x512",
             type: "image/png",
             purpose: "maskable",
-          }
-        ]
-      }
+          },
+        ],
+      },
     },
     aliasConfig: {
       "@": path.resolve(path.dirname(__dirname), "src"),
       buffer: path.resolve(path.dirname(__dirname), "node_modules", "buffer"),
-      "dexie-export-import/dist/import": "dexie-export-import/dist/import/index.js",
-    }
+      "dexie-export-import/dist/import":
+        "dexie-export-import/dist/import/index.js",
+    },
   };
 }