Change versionCode/versionName when running with --release

Hi,

I've been building-beta releasing-building-beta releasing an Android app for a couple of days now. Pretty much every time I build it I forget to update the versionCode and versionName in the AndroidManifest.xml. I get reminded of this then Google's Developer Console rejects my APK because of the versionCode not being larger than the previous version.

An easy way to make a little bit easier for the developers would be to add a prompt for versionCode/versionName in the CLI if the build is run with the --release flag. And let the predefined value be read from the current AndroidManifest.xml. This way the developer will be reminded to update the versionCode/versionName and if s/he doesn't want to it's just an enter stroke away.

If versionCode/versionName is changed then write it back to the AndroidManifest.xml

As tns build could be a part of a larger build script where user input is not possible, a new flag, such as --auto or --quiet, should probably be added as well - skipping the prompt.

首先跟踪使用 --release 时的 tns build 流程，并检查 AndroidManifest.xml 的读取和更新方式。当 release 构建能够使用 manifest 中的值进行提示、持久化更改后的 versionCode/versionName 值，并支持诸如 --auto 或 --quiet 这样的非交互式标志时，即可视为完成。