Add admin identity module: better-auth, per-app permissions, invitations (#12)

Reviewed-on: #12
Co-authored-by: Patrick Müller <mail@pmueller.me>
Co-committed-by: Patrick Müller <mail@pmueller.me>

package.json

@@ -12,25 +12,32 @@
 		"build": "tsc",
 		"debug": "export DEBUG=* && npm run start",
 		"test": "vitest run --coverage",
-		"test:watch": "vitest"
+		"test:watch": "vitest",
+		"test:integration": "vitest run --config vitest.integration.config.ts"
 	},
 	"keywords": [],
 	"author": "",
 	"license": "ISC",
 	"dependencies": {
+		"@better-auth/core": "^1.7.2",
+		"@better-auth/passkey": "^1.7.2",
 		"app-root-path": "^3.0.0",
 		"axios": "^1.20.0",
 		"bcrypt": "^5.0.1",
+		"better-auth": "^1.7.2",
 		"cors": "^2.8.5",
 		"debug": "^4.3.1",
 		"dotenv": "^16.6.1",
 		"express": "^4.18.2",
 		"guid-typescript": "^1.0.9",
+		"kysely": "^0.29.5",
 		"mariadb": "^3.0.2",
+		"mysql2": "^3.24.3",
 		"random-words": "^1.1.1",
 		"swagger-jsdoc": "^6.1.0",
 		"swagger-ui-express": "^4.3.0",
-		"winston": "^3.3.3"
+		"winston": "^3.3.3",
+		"zod": "^4.5.4"
 	},
 	"devDependencies": {
 		"@types/app-root-path": "^1.2.4",
@@ -40,14 +47,21 @@
 		"@types/express": "^4.17.15",
 		"@types/node": "^26.4.1",
 		"@types/random-words": "^1.1.2",
+		"@types/supertest": "^7.2.1",
 		"@types/swagger-jsdoc": "^6.0.1",
 		"@types/swagger-ui-express": "^4.1.3",
 		"@types/winston": "^2.4.4",
 		"@vitest/coverage-v8": "^5.0.0",
 		"is-number": "^7.0.0",
 		"source-map-support": "^0.5.19",
+		"supertest": "^7.2.2",
 		"typescript": "^5.9.3",
 		"vitest": "^5.0.0",
 		"vitest-sonar-reporter": "^3.0.0"
+	},
+	"overrides": {
+		"better-auth": {
+			"vitest": "$vitest"
+		}
 	}
 }