Fastify swagger implementation (#25)

* Fastify Swagger implementaion has been done with Matterhorn.

Swagger interface will be available on the same port as that of Main Application with a path /documentation E.g. http://localhost:3000/documentation
A sample path /user/{id} has been created where a user can post a Object (user creation object as per the schema )and corresponding result will be returned.

* Adding the LINTING RULES.

* Added changes to make sure the tests are passing.

* Adding a new test case for #22 Issue.

* Adding back the properties required for Swagger documentation.
Removing extra fields from test.ts

* Changed Version of fastify-swagger to 2.3.2 to reduce the warnings of using unrelated properties in the schema.

* Adding the changes as suggested by ETHAN.

/* eslint-disable-next-line no-unused-vars */

* Added some more changes as suggested by Ethan. POST block is moved to configureSwaggerPlugin.

* update package-lock

* Closer to fixing the coverage ci issue

* solved issue

* fix spelling mistake

jest.config.json

@@ -1,14 +1,13 @@
 {
   "moduleFileExtensions": [ "ts", "js" ],
-  "transform": {
-    "^.+\\.(ts)$": "ts-jest"
-  },
+  "preset": "ts-jest",
   "globals": {
     "ts-jest": {
       "tsConfig": "tsconfig.json"
     }
   },
   "testMatch": [
     "**/tests/**/*.ts"
-  ]
+  ],
+  "collectCoverageFrom": [ "src" ]
 }