Ajout d'un exemple pour les appels http.

package-lock.json

@@ -18,6 +18,7 @@
         "@angular/platform-browser": "^15.1.0",
         "@angular/platform-browser-dynamic": "^15.1.0",
         "@angular/router": "^15.1.0",
+        "angular-in-memory-web-api": "^0.15.0",
         "rxjs": "~7.8.0",
         "tslib": "^2.3.0",
         "zone.js": "~0.12.0"
@@ -4382,6 +4383,19 @@
         "ajv": "^8.8.2"
       }
     },
+    "node_modules/angular-in-memory-web-api": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/angular-in-memory-web-api/-/angular-in-memory-web-api-0.15.0.tgz",
+      "integrity": "sha512-T07vQTeBEGWfwZRM+jIooYgK4c8LR25I27otIthUkFINAREoPiBNogWDxlnROIeu1k2RrY3QJjMOYq7f62UcgA==",
+      "dependencies": {
+        "tslib": "^2.3.0"
+      },
+      "peerDependencies": {
+        "@angular/common": "^15.0.0",
+        "@angular/core": "^15.0.0",
+        "rxjs": "^6.5.3 || ^7.4.0"
+      }
+    },
     "node_modules/ansi-colors": {
       "version": "4.1.3",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.3.tgz",
@@ -15346,6 +15360,14 @@
         "fast-deep-equal": "^3.1.3"
       }
     },
+    "angular-in-memory-web-api": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/angular-in-memory-web-api/-/angular-in-memory-web-api-0.15.0.tgz",
+      "integrity": "sha512-T07vQTeBEGWfwZRM+jIooYgK4c8LR25I27otIthUkFINAREoPiBNogWDxlnROIeu1k2RrY3QJjMOYq7f62UcgA==",
+      "requires": {
+        "tslib": "^2.3.0"
+      }
+    },
     "ansi-colors": {
       "version": "4.1.3",
       "resolved": "https://registry.npmjs.org/ansi-colors/-/ansi-colors-4.1.3.tgz",