feat: init project with miniprogram, cloud functions and admin console

miniprogram/pages/ble-connect/ble-connect.wxss

@@ -0,0 +1,18 @@
+.loading-spinner {
+  padding: 40rpx 0;
+  display: flex;
+  justify-content: center;
+}
+
+.spinner {
+  width: 64rpx;
+  height: 64rpx;
+  border: 6rpx solid #eeeeee;
+  border-top-color: #333333;
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+}
+
+@keyframes spin {
+  to { transform: rotate(360deg); }
+}