Ladybird: Add RequestServer process to optionally replace Qt Networking

LibTLS still can't access many parts of the web, so let's hide this
behind a flag (with all the plumbing that entails).

Hopefully this can encourage folks to improve LibTLS's algorithm support
:^).

Meta/gn/secondary/Ladybird/RequestServer/BUILD.gn

@@ -0,0 +1,42 @@
+import("//Ladybird/link_qt.gni")
+
+link_qt("RequestServer_qt") {
+  qt_components = [ "Core" ]
+}
+
+executable("RequestServer") {
+  configs += [
+    "//Ladybird:ladybird_config",
+    ":RequestServer_qt",
+  ]
+  include_dirs = [
+    "//Userland/Libraries",
+    "//Userland/Services",
+  ]
+  deps = [
+    "//AK",
+    "//Userland/Libraries/LibCore",
+    "//Userland/Libraries/LibCrypto",
+    "//Userland/Libraries/LibFileSystem",
+    "//Userland/Libraries/LibGemini",
+    "//Userland/Libraries/LibHTTP",
+    "//Userland/Libraries/LibIPC",
+    "//Userland/Libraries/LibMain",
+    "//Userland/Libraries/LibProtocol",
+    "//Userland/Libraries/LibTLS",
+  ]
+  sources = [
+    "../Utilities.cpp",
+    "//Userland/Services/RequestServer/ConnectionCache.cpp",
+    "//Userland/Services/RequestServer/ConnectionFromClient.cpp",
+    "//Userland/Services/RequestServer/GeminiProtocol.cpp",
+    "//Userland/Services/RequestServer/GeminiRequest.cpp",
+    "//Userland/Services/RequestServer/HttpProtocol.cpp",
+    "//Userland/Services/RequestServer/HttpRequest.cpp",
+    "//Userland/Services/RequestServer/HttpsProtocol.cpp",
+    "//Userland/Services/RequestServer/HttpsRequest.cpp",
+    "//Userland/Services/RequestServer/Protocol.cpp",
+    "//Userland/Services/RequestServer/Request.cpp",
+    "main.cpp",
+  ]
+}