authentication-module: allow client side authentication with Nginx as a

...va/net/jami/jams/authmodule/UserAuthenticationModule.java

extras/scripts/setup_jams.sh

jams-ca/src/main/java/net/jami/jams/ca/JamsCA.java

...mi/jams/ca/workers/csr/builders/SystemAccountBuilder.java

...ams/ca/workers/csr/builders/SystemAccountBuilderTest.java

...ms/common/cryptoengineapi/CertificateAuthorityConfig.java

...ient/src/components/ServerParameters/ServerParameters.tsx

jams-server/src/main/java/net/jami/jams/server/Server.java

...main/java/net/jami/jams/server/servlets/LoginServlet.java

.../server/servlets/api/auth/login/AuthRequestProcessor.java

userguide/docs/admin.md