feat: 引入uView Plus组件库，新增部分静态页面

uni_modules/uview-plus/libs/mixin/button.js

@@ -0,0 +1,18 @@
+import { defineMixin } from '../vue'
+
+export const buttonMixin = defineMixin({
+    props: {
+        lang: String,
+        sessionFrom: String,
+        sendMessageTitle: String,
+        sendMessagePath: String,
+        sendMessageImg: String,
+        showMessageCard: Boolean,
+        appParameter: String,
+        formType: String,
+        openType: String
+    }
+})
+
+export default buttonMixin
+