Create an Eclipse marketplace entry for windup eclipse client

Hi,

currently, there is an eclipse client for windup[1], that produces an eclipse update site[2] and is only available in JBoss Tools, via central.

we're removing that feature and replace it by the upstream marketplace[3]. (see linked JIRA)

we encourage you to create an entry to point to windup update site. 

if needed i can provide help or initiate that creation, but need a point of contact for maintenance.

[1]https://github.com/windup/windup-eclipse-plugin/

[2]https://download.jboss.org/jbosstools/photon/stable/updates/mtr/ 

[3]https://marketplace.eclipse.org/