Implements an Interface with basic functions

Defines New Credential function signature

src/main/java/CredentialInterface.java

@@ -1,11 +0,0 @@
-public interface CredentialInterface {
-
-    public void show();
-    public void edit();
-    public void delete();
-    public void getCredentials();
-    public void setCredentials();
-    public void getAsJSON();
-    public void loadCredentialsFromJSON();
-
-}

src/main/java/CredentialRepositoryInterface.java

@@ -0,0 +1,11 @@
+public interface CredentialRepositoryInterface {
+
+    void createNewCredential(String name, String password);
+    void edit();
+    void delete();
+    void getCredentials();
+    void setCredentials();
+    void getAsJSON();
+    void loadCredentialsFromJSON();
+
+}