milestone: publish alpha version (#637)

- document folder
- full-text search
- blob storage
- basic edgeless support

Co-authored-by: tzhangchi <terry.zhangchi@outlook.com>
Co-authored-by: QiShaoXuan <qishaoxuan777@gmail.com>
Co-authored-by: DiamondThree <diamond.shx@gmail.com>
Co-authored-by: MingLiang Wang <mingliangwang0o0@gmail.com>
Co-authored-by: JimmFly <yangjinfei001@gmail.com>
Co-authored-by: Yifeng Wang <doodlewind@toeverything.info>
Co-authored-by: Himself65 <himself65@outlook.com>
Co-authored-by: lawvs <18554747+lawvs@users.noreply.github.com>
Co-authored-by: Qi <474021214@qq.com>

packages/app/src/components/loading/loading.tsx

@@ -0,0 +1,20 @@
+import {
+  StyledLoadingWrapper,
+  StyledLoading,
+  StyledLoadingItem,
+} from './styled';
+
+export const Loading = ({ size = 40 }: { size?: number }) => {
+  return (
+    <StyledLoadingWrapper size={size}>
+      <StyledLoading>
+        <StyledLoadingItem size={size} />
+        <StyledLoadingItem size={size} />
+        <StyledLoadingItem size={size} />
+        <StyledLoadingItem size={size} />
+      </StyledLoading>
+    </StyledLoadingWrapper>
+  );
+};
+
+export default Loading;