cvmts: Use npm versions of superqemu/nodejs-rfb.

We publish them now, so let's use them in cvmts!

Additionally, this removes the 'shared' module entirely, since it has little purpose anymore. The logger is replaced with pino (because superqemu uses pino for logging itself).

.gitmodules

@@ -1,6 +1,3 @@
-[submodule "nodejs-rfb"]
-	path = nodejs-rfb
-	url = https://github.com/computernewb/nodejs-rfb
 [submodule "collab-vm-1.2-binary-protocol"]
 	path = collab-vm-1.2-binary-protocol
 	url = https://github.com/computernewb/collab-vm-1.2-binary-protocol