Add I²C bootloader and firmware updater

.cargo/config.toml

.gitlab-ci.yml

Cargo.lock

Cargo.toml

INSTALL.md

README.org

bootloader-params/Cargo.toml

bootloader-params/src/lib.rs

bootloader/.cargo/config.toml

bootloader/Cargo.toml

bootloader/build.rs

bootloader/python/bootloader.py

bootloader/src/bootloader.rs

bootloader/src/flash.rs

bootloader/src/main.rs

build-support/src/lib.rs

controller/.cargo/config.toml

controller/Cargo.toml

controller/build.rs

controller/python/controller.py