Take advantage of CodeActionLiteral client capability

[theli-ua]

trafficstars

If client advertises CodeActionLiteralSupport, using that for java.apply.workspaceEdit would allow clients to use a generic algorithm, instead of being forced to provide a special case for jdt.ls.

Fixes #376 This is essentially a rebase of 1278 Superseeds https://github.com/eclipse-jdtls/eclipse.jdt.ls/pull/2688

Since the original reason for revert is now addressed by https://github.com/eclipse-jdtls/eclipse.jdt.ls/pull/1657

[eclipse-ls-bot]

Can one of the admins verify this patch?

[jnturton]

Hi, is this PR still active? It would be great to get this working...