Argument parsing rework (#1940)

* Experimental argument handling

* Restored browser extension launch functionality

Also moved check from BrowerExtension.cpp to Args.cpp as it is more relevant there and doesn't require passing arguments to a function in another file

* Fixed formatting

* Simplified Args.cpp code, added changelog entry

* Hid crash-recovery from help

* Dont save settings if launched with --channels

* Changed parsing method to t:channel

* Code cleanup

* Changed plaform delimeter to :, platform defaults to Twitch

Co-authored-by: fourtf <tf.four@gmail.com>

src/main.cpp

@@ -1,4 +1,5 @@
 #include <QApplication>
+#include <QCommandLineParser>
 #include <QDebug>
 #include <QMessageBox>
 #include <QStringList>
@@ -25,14 +26,10 @@ int main(int argc, char **argv)
     QCoreApplication::setApplicationVersion(CHATTERINO_VERSION);
     QCoreApplication::setOrganizationDomain("https://www.chatterino.com");
 
-    // convert char** to QStringList
-    auto args = QStringList();
-    std::transform(argv + 1, argv + argc, std::back_inserter(args),
-                   [&](auto s) { return s; });
-    initArgs(args);
+    initArgs(a);
 
     // run in gui mode or browser extension host mode
-    if (shouldRunBrowserExtensionHost(args))
+    if (getArgs().shouldRunBrowserExtensionHost)
     {
         runBrowserExtensionHost();
     }