feat(github): New module

Module used to query the GitHub API for information.
Currently only supports notification count.

Ref #84

include/modules/github.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include "config.hpp"
+#include "modules/meta/timer_module.hpp"
+#include "utils/http.hpp"
+
+POLYBAR_NS
+
+namespace modules {
+  /**
+   * Module used to query the GitHub API for notification count
+   */
+  class github_module : public timer_module<github_module> {
+   public:
+    explicit github_module(const bar_settings&, string);
+
+    void setup();
+    bool update();
+    bool build(builder* builder, const string& tag) const;
+
+   private:
+    static constexpr auto TAG_LABEL = "<label>";
+
+    label_t m_label{};
+    string m_accesstoken{};
+    unique_ptr<http_downloader> m_http{};
+  };
+}
+
+POLYBAR_NS_END