Add k6 performance tests for NCMP

This commit adds K6 tests for NCMP functionalities:
- Registration of 20000 CM-handles
- Synchronous single CM-handle passthrough read operation
- CM-handle and ID searches for no filter, module, and public property
- De-registration of 20000 CM-handles
- A mixed load test
Also includes a README and shell scripts to run all tests.

Issue-ID: CPS-2199
Signed-off-by: danielhanrahan <daniel.hanrahan@est.tech>
Change-Id: Ia2e59674057ed28f5f9ceed9465133f7c0ce8318
diff --git a/k6-tests/ncmp/search-base.js b/k6-tests/ncmp/search-base.js
new file mode 100644
index 0000000..9c1b247
--- /dev/null
+++ b/k6-tests/ncmp/search-base.js
@@ -0,0 +1,35 @@
+/*
+ *  ============LICENSE_START=======================================================
+ *  Copyright (C) 2024 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+import http from 'k6/http';
+import { check } from 'k6';
+import { NCMP_BASE_URL, TOTAL_CM_HANDLES } from './utils.js';
+
+export function searchRequest(searchType, searchFilter) {
+    const response = http.post(NCMP_BASE_URL + '/ncmp/v1/ch/' + searchType, searchFilter, {
+        headers: { 'Content-Type': 'application/json' },
+    });
+    check(response, {
+        'status equals 200': (r) => r.status === 200,
+    });
+    check(JSON.parse(response.body), {
+        'returned list has expected CM-handles': (arr) => arr.length === TOTAL_CM_HANDLES,
+    });
+}