adjust licensing

package.json

@@ -1,8 +1,29 @@
 {
     "private": true,
     "name": "test",
+    "description": "An implementation of the Dungeonslayers 4 game system for Foundry Virtual Tabletop.",
     "version": "0.1.0",
-    "description": "",
+    "license": "MIT",
+    "homepage": "https://git.f3l.de/dungeonslayers/ds4",
+    "repository": {
+        "type": "git",
+        "url": "https://git.f3l.de/dungeonslayers/ds4"
+    },
+    "bugs": {
+        "url": "https://git.f3l.de/dungeonslayers/ds4/-/issues"
+    },
+    "contributors": [
+        {
+            "name": "Johannes Loher",
+            "email": "johannes.loher@fg4f.de"
+        },
+        {
+            "name": "Gesina Schwalbe"
+        },
+        {
+            "name": "Oliver Rümpelein"
+        }
+    ],
     "scripts": {
         "package": "gulp package",
         "build": "gulp build",
@@ -16,8 +37,6 @@
         "test:ci": "ts-node ./node_modules/jasmine-xml-reporter/bin/jasmine --junitreport",
         "format": "prettier --write 'src/**/*.(ts|json|scss)'"
     },
-    "author": "",
-    "license": "",
     "devDependencies": {
         "@types/jasmine": "^3.6.2",
         "@typescript-eslint/eslint-plugin": "^4.11.0",