WebDriver: Add new WebDriver service

WebDriver aims to implement the WebDriver specification found at
https://w3c.github.io/webdriver/webdriver-spec.html . It's an HTTP
server that can create Browser sessions and control them.

Co-authored-by: Florent Castelli <florent.castelli@gmail.com>

Userland/Services/WebDriver/CMakeLists.txt

@@ -0,0 +1,19 @@
+serenity_component(
+    WebDriver
+    TARGETS WebDriver
+)
+
+set(SOURCES
+    BrowserConnection.cpp
+    Client.cpp
+    Session.cpp
+    main.cpp
+)
+
+set(GENERATED_SOURCES
+    ../../Applications/Browser/WebDriverSessionClientEndpoint.h
+    ../../Applications/Browser/WebDriverSessionServerEndpoint.h
+)
+
+serenity_bin(WebDriver)
+target_link_libraries(WebDriver LibCore LibHTTP LibMain LibIPC)