Add APIKEY/Token authentication mechanism

[tfr42]

Currently deegree webservices WAR file comes with a security contraint enabled which protects access to the REST API of deegree by BASIC authentication. Users of deegree need to configure their servlet container to link to a realm with authorization information (such as tomcat-users.xml).

To harmonize the webapps of deegree webservices and deegree OGC API the webservices webapp shall support APIKEY/Token based authentication as in deegree OGC API webapp (see deegree/deegree-ogcapi#70).

Documentation needs to be improved how to setup and configure security.

[stephanr]

see

• Added ApiKey/Token authentication #1498

[tfr42]

wiki page https://github.com/deegree/deegree3/wiki/Upgrading-deegree-webservices#changes-in-behavior updated

[tfr42]

Issue is resolved.