Add github package (#32)

* Add github package

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* Accidentally added extra

* Allow octokit to be extended

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tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "baseUrl": "./",
+    "esModuleInterop": true,
+    "outDir": "./lib",
+    "rootDir": "./src"
+  },
+  "include": [
+    "./src"
+  ]
+}