Backport changes from Cloudproxy (#11)

src/captcha/hcaptcha-solver.ts

@@ -0,0 +1,21 @@
+const solveCaptcha = require('hcaptcha-solver');
+import { SolverOptions } from '.'
+/*
+    This method uses the hcaptcha-solver project:
+        https://github.com/JimmyLaurent/hcaptcha-solver
+
+    TODO: allow user pass custom options to the solver.
+
+    ENV:
+        There are no other variables that must be set to get this to work
+*/
+
+export default async function solve({ url }: SolverOptions): Promise<string> {
+  try {
+    const token = await solveCaptcha(url)
+    return token
+  } catch (e) {
+    console.error(e)
+    return null
+  }
+}