Refactor to more consistent structure (e.g. "plugins")

environ.ts

@@ -0,0 +1,17 @@
+export interface EnvSettings {
+	BLITZCRANK_API_TOKEN: string;
+	BLITZCRANK_APP_ID: string;
+}
+
+export function readEnvSettings(): EnvSettings {
+    // TODO(DWM): I hate this.
+	const BLITZCRANK_API_TOKEN = process.env.BLITZCRANK_API_TOKEN;
+    if (BLITZCRANK_API_TOKEN === undefined || BLITZCRANK_API_TOKEN === null) {
+        throw TypeError();
+    }
+    const BLITZCRANK_APP_ID = process.env.BLITZCRANK_APP_ID;
+        if (BLITZCRANK_APP_ID === undefined || BLITZCRANK_APP_ID === null) {
+        throw TypeError();
+    }
+    return { BLITZCRANK_API_TOKEN, BLITZCRANK_APP_ID };
+}