feat: uni-app-x ext api

docs/uni-app-x/api/getbatteryinfo.md

+## uni.getBatteryInfo(options) @getbatteryinfo
+
+<!-- UTSAPIJSON.getBatteryInfo.description -->
+
+<!-- UTSAPIJSON.getBatteryInfo.param -->
+
+<!-- UTSAPIJSON.getBatteryInfo.returnValue -->
+
+<!-- UTSAPIJSON.getBatteryInfo.compatibility -->
+
+<!-- UTSAPIJSON.getBatteryInfo.tutorial -->
+
+<!-- UTSAPIJSON.general_type.name -->
+
+<!-- UTSAPIJSON.general_type.param -->
\ No newline at end of file

docs/uni-app-x/api/getbatteryinfosync.md

+## uni.getBatteryInfoSync() @getbatteryinfosync
+
+<!-- UTSAPIJSON.getBatteryInfoSync.description -->
+
+<!-- UTSAPIJSON.getBatteryInfoSync.param -->
+
+<!-- UTSAPIJSON.getBatteryInfoSync.returnValue -->
+
+<!-- UTSAPIJSON.getBatteryInfoSync.compatibility -->
+
+<!-- UTSAPIJSON.getBatteryInfoSync.tutorial -->
+
+<!-- UTSAPIJSON.general_type.name -->
+
+<!-- UTSAPIJSON.general_type.param -->
\ No newline at end of file