Add 'eslint-plugin-header' to check license

Add eslint rule to verify that source files have the required license
header.
Convert `.eslintrc.json` to `.eslintrc.cjs` to add header plugin
configuration.

Gitlab: #45
Change-Id: I7a2331d68a418be35e6bea425eede92087451980
diff --git a/package-lock.json b/package-lock.json
index dbbfc9a..f3457a3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -44,6 +44,7 @@
         "cypress": "^10.8.0",
         "eslint": "^8.23.1",
         "eslint-config-prettier": "^8.5.0",
+        "eslint-plugin-header": "^3.1.1",
         "eslint-plugin-simple-import-sort": "^8.0.0",
         "eslint-plugin-unused-imports": "^2.0.0",
         "husky": "^8.0.0",
@@ -7001,6 +7002,15 @@
         "eslint": ">=7.0.0"
       }
     },
+    "node_modules/eslint-plugin-header": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-header/-/eslint-plugin-header-3.1.1.tgz",
+      "integrity": "sha512-9vlKxuJ4qf793CmeeSrZUvVClw6amtpghq3CuWcB5cUNnWHQhgcqy5eF8oVKFk1G3Y/CbchGfEaw3wiIJaNmVg==",
+      "dev": true,
+      "peerDependencies": {
+        "eslint": ">=7.7.0"
+      }
+    },
     "node_modules/eslint-plugin-react": {
       "version": "7.31.8",
       "resolved": "https://registry.npmjs.org/eslint-plugin-react/-/eslint-plugin-react-7.31.8.tgz",
@@ -20344,6 +20354,13 @@
       "dev": true,
       "requires": {}
     },
+    "eslint-plugin-header": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/eslint-plugin-header/-/eslint-plugin-header-3.1.1.tgz",
+      "integrity": "sha512-9vlKxuJ4qf793CmeeSrZUvVClw6amtpghq3CuWcB5cUNnWHQhgcqy5eF8oVKFk1G3Y/CbchGfEaw3wiIJaNmVg==",
+      "dev": true,
+      "requires": {}
+    },
     "eslint-plugin-react": {
       "version": "7.31.8",
       "resolved": "https://registry.npmjs.org/eslint-plugin-react/-/eslint-plugin-react-7.31.8.tgz",