docs: add vxe-table doc (#4807)

* docs: init vxe-table demos

* style: fix vxe-table index.scss import error

* docs: fix vxe-table style & theme toggle problem

* docs: add rest demos

* docs: add vxe-table demo desc

* fix: add maximumFileSizeToCacheInBytes to fix build error

* fix: fix vxe-table set-theme build error

* docs: fix vitepress ssr render problem

* docs: add some tips for vitepress compatibility

docs/src/_env/adapter/index.ts

@@ -1 +1,2 @@
 export * from './form';
+export * from './vxe-table';