refactore, using inversify for dependency injection

src/github/ioc.ts

@@ -0,0 +1,15 @@
+import { Container } from "inversify";
+
+import { DotnetTool, GitVersionTool, VersionManager } from "../common";
+import { IBuildAgent, IDotnetTool, IGitVersionTool, IVersionManager } from "../interfaces";
+import { TYPES } from "../types";
+import { BuildAgent } from "./build-agent";
+
+const ioc = new Container();
+
+ioc.bind<IVersionManager>(TYPES.IVersionManager).to(VersionManager);
+ioc.bind<IBuildAgent>(TYPES.IBuildAgent).to(BuildAgent);
+ioc.bind<IDotnetTool>(TYPES.IDotnetTool).to(DotnetTool);
+ioc.bind<IGitVersionTool>(TYPES.IGitVersionTool).to(GitVersionTool);
+
+export { ioc };