Add jest and add drone by not complete yet

.drone.yml

@@ -0,0 +1,11 @@
+kind: pipeline
+type: docker
+name: ci
+
+steps:
+  - name: test
+  - image: node
+  - command:
+    - yarn
+    - yarn migrate
+    - yarn test

package.json

@@ -3,13 +3,16 @@
   "license": "MIT",
   "main": "main.ts",
   "devDependencies": {
+    "@types/jest": "^26.0.20",
+    "jest": "^26.6.3",
     "prisma": "2.18.0",
     "ts-node": "9.1.1",
     "typescript": "4.2.3"
   },
   "scripts": {
     "dev": "ts-node ./src/main.ts",
-    "migrate": "prisma migrate dev --name add-profile --preview-feature"
+    "migrate": "prisma migrate dev --name add-profile --preview-feature",
+    "test": "jest"
   },
   "dependencies": {
     "@prisma/client": "2.18.0"