GHttp: Rename GHttpNetworkJob => GHttpJob. And tidy up a little bit.

LibGUI/GHttpJob.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <LibGUI/GNetworkJob.h>
+#include <LibGUI/GHttpRequest.h>
+#include <AK/HashMap.h>
+
+class GTCPSocket;
+
+class GHttpJob final : public GNetworkJob {
+public:
+    explicit GHttpJob(const GHttpRequest&);
+    virtual ~GHttpJob() override;
+
+    virtual void start() override;
+
+    virtual const char* class_name() const override { return "GHttpJob"; }
+
+private:
+    enum class State {
+        InStatus,
+        InHeaders,
+        InBody,
+        Finished,
+    };
+
+    GHttpRequest m_request;
+    GTCPSocket* m_socket { nullptr };
+    State m_state { State::InStatus };
+    int m_code { -1 };
+    HashMap<String, String> m_headers;
+};