Improve first time setup for new devs

[nicoschmdt]

While setting up my environment I encountered some undocumented or hard-to-find steps that could be improved for newcomers.To enhance the Development section in the wiki page as a way to make it more begginer-friendly, I suggest we:

• Add a sub section in "How to build" suggesting the use of DockerHub as an alternative to buildx;
• Add a README.md for frontend debugging including the dependencies for bun and the BLUEOS_ADDRESS=http://<BLUEOS_IP> bun run dev command;
• Add the execution of git submodule update --init --recursive in the setup steps;
• Add a note to inform that depending on the OS (e.g. Arch Linux) it will be necessary to configure Avahi to identify and access the BlueOS on blueos-avahi.local.
• Link the Development Wiki with the BlueOS docs and vice-versa, or just unify everything in one place;
• When configuring buildx locally I had to do two extra steps:

1. install qemu-user-static-binfmt and qemu-user-static
2. execute docker run --privileged --rm tonistiigi/binfmt --install all

Lastly, I think it would be nice to link the Developer Wiki from the main README.md.