Add gradle language support to the pack

[ghost]

My workplace and many others I know use gradle for builds, so having gradle support should be considered for this pack. I use https://github.com/naco-siren/vscode-gradle-language for my gradle work, and it is usually well-maintained.

[skyflyer]

It seems that there is some gradle support already (a sample spring boot mvc project works).

I found the following issue: the compiled outputs are put into the bin directory. The gradle project uses build directory as the output, so hot reloading and automatic restarting do not work.

It would be nice if we could run gradle tasks from within VSCode as well.

[aksh1618]

@rogersachan I tried using that plugin, seems to be sort of half baked, and doesn't seem to be well-maintained anymore (no commits/replies in the past 5 months).

[akaroml]

Taking this request to the backlog.

[snowdream]

please support gradle, Thank you.

[akaroml]

While we are working on other problems, it would be great if you guys can share the expectations of the Gradle extension if there were one. What tasks would you like to perform with this extension?
@rogersachan @aksh1618 @snowdream @skyflyer

[jdneo]

The Gradle for Java extension is added to the extension pack now.