Server: Add TTYServer, a rudimentary text console manager

This should probably call out to a login program at some point. Right now
it just puts a root terminal on tty{1,2,3}.

Remember not to leave your Serenity workstation unattended!

Servers/TTYServer/main.cpp

@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char** argv)
+{
+    if (argc < 2)
+        return -1;
+
+    dbgprintf("Starting console server on %s\n", argv[1]);
+
+    while (true) {
+        dbgprintf("Running shell on %s\n", argv[1]);
+        int rc = system("/bin/Shell");
+        dbgprintf("Shell on %s exited with code %d\n", argv[1], rc);
+    }
+}