chore(seed): handle reboot character properly

[anarchuser]

BREAKING CHANGE: rename CHAINLAODER to SEED

NOTE:

• make send now always sends reboot command
• seed now expects one extra char before the length

[AtomToast]

Should solve #54

I will test this in a bit

[AtomToast]

make resend when freshly booted does not seem to send a full kernel image now. It just gets stuck during "loading kernel..." (both leds on).
make send doesn't have a sleep so it is effectively just a reboot and you have to use it twice. Which isn't that useful but it's still better than a freeze I guess.

[anarchuser]

I had a stupid thought mistake

[anarchuser]

should work now

[anarchuser]

NOTE: if kernel size coincidentally starts with reboot character, we have an issue

[AtomToast]

using resend first still does not work and now send doesn't reboot anymore either but just makes it send random characters on the screen

[anarchuser]

normal send should have worked just like before. Random output is fine if the normal init print statements are there too

[anarchuser]

resend should work too, now