JSP support

[PavelCibulka]

Add supprt for JSP, TAG, JSTL

[sid-srini]

Hi @PavelCibulka. Thanks for using the extension.

At present, the Java extension does not intend to support editing JSP files etc., and is more focussed towards editing in Java.
If there are any specific use-cases or requirements that you had in mind, please do share them here. Thanks.