feat: hot-hook integration

[Julien-R44]

Integrate hot-hook into the assembler

Basically, if the --hmr flag is passed, we spawn the Node subprocess with the --import=hot-hook/register hook.
We intercept received messages sent by Hot Hook from the subprocess:

• If it's a full reload message, clear screen + log + restart http server
• If it's an invalidation message (i.e. from HMR), then just a log