Feat: add constructor to set clientId on Client creation (#781)

Co-authored-by: Austin Nicholas <anicholas@netflix.com>

Author: tanya732

src/main/java/com/auth0/json/mgmt/client/Client.java

@@ -154,6 +154,17 @@ public Client(@JsonProperty("name") String name) {
         this.name = name;
     }
 
+    /**
+     * Creates a new Application instance setting the name and client id properties.
+     *
+     * @param name of the application.
+     * @param clientId the client id of the application.
+     */
+    public Client(String name, String clientId) {
+        this.name = name;
+        this.clientId = clientId;
+    }
+
     /**
      * Getter for the name of the application.
      *

src/test/java/com/auth0/json/mgmt/client/ClientTest.java

@@ -377,4 +377,18 @@ public void shouldIncludeReadOnlyValuesOnDeserialize() throws Exception {
         assertThat(client.isHerokuApp(), is(true));
         assertThat(client.getSigningKeys(), is(notNullValue()));
     }
+
+    @Test
+    public void shouldCreateClientWithNameOnly() {
+        Client client = new Client("My App");
+        assertThat(client.getName(), is("My App"));
+        assertThat(client.getClientId(), is(nullValue()));
+    }
+
+    @Test
+    public void shouldCreateClientWithNameAndClientId() {
+        Client client = new Client("My App", "client123");
+        assertThat(client.getName(), is("My App"));
+        assertThat(client.getClientId(), is("client123"));
+    }
 }