chore: add no auth client credential provider

src/credential_provider/CredentialProvider.ts

@@ -0,0 +1,9 @@
+import AuthStrategy from "../auth_strategy/AuthStrategy";
+
+export default abstract class CredentialProvider {
+  private authType: string;
+  protected constructor(authType: string) {
+    this.authType = authType;
+  }
+  abstract toAuthStrategy(): AuthStrategy;
+}

src/credential_provider/NoAuthCredentialProvider.ts

@@ -0,0 +1,17 @@
+import CredentialProvider from "./CredentialProvider";
+import AuthStrategy from "../auth_strategy/AuthStrategy";
+import NoAuthStrategy from "../auth_strategy/NoAuthStrategy";
+
+namespace NoAuthCredentialProvider {
+  export class NoAuthCredentialProvider extends CredentialProvider {
+    constructor() {
+      super("client-credentials");
+    }
+
+    public toAuthStrategy(): AuthStrategy {
+      return new NoAuthStrategy();
+    }
+  }
+}
+
+export = NoAuthCredentialProvider;