Experimental support for synapse REST auth module

- See https://github.com/maxidor/matrix-synapse-rest-auth
- Include Google Firebase backend using UID as login and user token as password

src/main/groovy/io/kamax/mxisd/auth/UserAuthResult.java

@@ -0,0 +1,47 @@
+package io.kamax.mxisd.auth;
+
+public class UserAuthResult {
+
+    private boolean success;
+    private String mxid;
+    private String displayName;
+
+    public UserAuthResult failure() {
+        success = false;
+        mxid = null;
+        displayName = null;
+
+        return this;
+    }
+
+    public void success(String mxid, String displayName) {
+        setSuccess(true);
+        setMxid(mxid);
+        setDisplayName(displayName);
+    }
+
+    public boolean isSuccess() {
+        return success;
+    }
+
+    public void setSuccess(boolean success) {
+        this.success = success;
+    }
+
+    public String getMxid() {
+        return mxid;
+    }
+
+    public void setMxid(String mxid) {
+        this.mxid = mxid;
+    }
+
+    public String getDisplayName() {
+        return displayName;
+    }
+
+    public void setDisplayName(String displayName) {
+        this.displayName = displayName;
+    }
+
+}