fix: frontend/package.json & frontend/.snyk to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/npm:debug:20170905
- https://snyk.io/vuln/npm:extend:20180424
- https://snyk.io/vuln/npm:hoek:20180212
- https://snyk.io/vuln/npm:stringstream:20180511
- https://snyk.io/vuln/npm:tough-cookie:20170905

frontend/.snyk

@@ -0,0 +1,52 @@
+# Snyk (https://snyk.io) policy file, patches or ignores known vulnerabilities.
+version: v1.25.1
+ignore: {}
+# patches apply the minimum changes required to fix a vulnerability
+patch:
+  'npm:debug:20170905':
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > tar-pack > debug':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:debug:20170905'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > tar-pack >
+          debug
+  'npm:extend:20180424':
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > extend':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:extend:20180424'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          extend
+  'npm:hoek:20180212':
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > hawk > hoek':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:hoek:20180212'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          hawk > hoek
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > hawk > boom > hoek':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:hoek:20180212'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          hawk > boom > hoek
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > hawk > sntp > hoek':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:hoek:20180212'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          hawk > sntp > hoek
+  'npm:stringstream:20180511':
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > stringstream':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:stringstream:20180511'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          stringstream
+  'npm:tough-cookie:20170905':
+    - '@angular-devkit/core > chokidar > fsevents > node-pre-gyp > request > tough-cookie':
+        patched: '2023-08-31T14:04:40.679Z'
+        id: 'npm:tough-cookie:20170905'
+        path: >-
+          @angular-devkit/core > chokidar > fsevents > node-pre-gyp > request >
+          tough-cookie

frontend/package.json

@@ -16,7 +16,9 @@
     "build:fire": "ng build --environment fire -sm",
     "build:prod": "ng build --prod -sm",
     "build:node-sass": "npm rebuild node-sass",
-    "deploy:fire": "firebase deploy"
+    "deploy:fire": "firebase deploy",
+    "prepare": "yarn run snyk-protect",
+    "snyk-protect": "snyk-protect"
   },
   "private": true,
   "dependencies": {
@@ -50,7 +52,8 @@
     "rxjs": "5.5.6",
     "typeface-montserrat": "^0.0.45",
     "web-animations-js": "^2.3.1",
-    "zone.js": "^0.8.4"
+    "zone.js": "^0.8.4",
+    "@snyk/protect": "latest"
   },
   "devDependencies": {
     "@angular/cli": "^1.6",
@@ -74,5 +77,6 @@
     "ts-node": "^4.1.0",
     "tslint": "^5.9.1",
     "typescript": "^2.6.0"
-  }
+  },
+  "snyk": true
 }