Remove existing encoding workarounds from client side

[testforstephen]

Fixes microsoft/vscode-java-pack#720
Fixes microsoft/vscode-java-pack#756
Fixes #622
Fixes #623
Fixes #646
Fixes #813

This PR made such changes:

• Remove the launcher.bat from the generated command line, since it brings some side effects on Windows.
• If launching application in terminals (e.g. cmd/ps), then make Java application and terminal to use the platform default encoding.
• If launching application in VS Code Internal Console (aka. Debug Console), then use UTF-8 in Java application because VS Code Debug Console use UTF-8 to display output.

For Windows user, the recommended approach to solve encoding issue is to change the system locale to the target language. Learn more from the Encoding Troubleshooting Guide. https://github.com/microsoft/vscode-java-debug/blob/main/Troubleshooting_encoding.md

[Eskibear]

remember to remove launcher script related code from 1. utility , 2. .bat script from code base

[imba-tjd]

This should be VSC's files.encoding in case of messing up with java's -Dfile.encoding.

[testforstephen]

@imba-tjd Nice finding, yes, it's files.encoding.

[testforstephen]

The new diagram is as follows.

[imba-tjd]

The hint message needs to be changed.

另外在Changelog里要一句thanks不过分吧

[testforstephen]

欢迎提PR来fix这个问题

[imba-tjd]

搜了一下没搜到

不过我的本意是在已有的0.37的changelog里加一句thanks我for helping addressing the issue的，如果你们觉得不能修改已发布的就算了吧。这个提示信息我就不pr了，我不会ts也没开发过vsc的扩展，还是你们来修