[ELYWEB-1] Add an initial-contributors.md to identify the names of individuals who had previously contributed to the ApplicationSecurityDomain class within the Undertow subsystem prior to this code being ported here.
[ELYWEB-1] Add an initial-contributors.md to identify the names of individuals who had previously contributed to the ApplicationSecurityDomain class within the Undertow subsystem prior to this code being ported here.

wildfly-security/elytron-web,darranl/elytron-web