LPS-47664 Avoid using jsp packages in OSGi
LPS-47664 Add example project files
LPS-47664 Added example tag view extension

This tag key factory acts on com.liferay.taglib.aui.FormTag. This key
factory assigns a key for the tags using the portlet where they are
being used plus the name attribute of the tag.

The tag extension then registers on starttag before, and simply writes
"extension"
LPS-47664 Rename
LPS-47664 update
LPS-47664 update
LPS-47664 update
LPS-47664 SF