Add RESTful package to provide common details among services

packages/restful/package.json

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+{
+  "name": "@autoplex/restful",
+  "version": "0.0.0",
+  "main": "dist/lib/index.js",
+  "types": "dist/typings/index.d.ts",
+  "license": "MIT",
+  "scripts": {
+    "build": "yarn run clean && tsc",
+    "clean": "rimraf ./dist"
+  }
+}

packages/restful/src/index.ts

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+/**
+ * The basic response schema
+ */
+ export interface IResponse<T> {
+	result?: T,
+	status : string
+}
+
+/**
+ * Supported status codes
+ */
+export enum Status {
+	Ok                  = 200,
+	BadRequest          = 400,
+	Unauthorized        = 401,
+	Forbidden           = 403,
+	NotFound            = 404,
+	Conflict            = 409,
+	Gone                = 410,
+	PayloadTooLarge     = 413,
+	UnprocessableEntity = 422,
+	InternalServerError = 500
+}
+
+/**
+ * Create a response
+ */
+export function statusMessage(status: Status): string {
+	switch(status) {
+		case Status.Ok:
+			return "OK"
+		case Status.BadRequest:
+			return "Bad Request";
+		case Status.Unauthorized:
+			return "Unauthorized";
+		case Status.Forbidden:
+			return "Forbidden";
+		case Status.NotFound:
+			return "Not Found";
+		case Status.Conflict:
+			return "Conflict";
+		case Status.Gone:
+			return "Gone";
+		case Status.PayloadTooLarge:
+			return "Payload Too Large";
+		case Status.UnprocessableEntity:
+			return "Unprocessable Entity";
+		case Status.InternalServerError:
+			return "Internal Server Error";
+	}
+}

packages/restful/tsconfig.json

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+{
+	"extends": "../../tsconfig.package.json",
+	"compilerOptions": {
+	  "outDir": "./dist/lib",
+	  "declarationDir": "./dist/typings"
+	}
+}