Example: Matter On/Off Light

[maikerlab]

Contribution description

• Adds a new example application: rust-matter-light
• Application code is written in Rust and implements an "OnOff Light" in Matter protocol
• Potentially supports all boards which provide the rust_target and periph_eth feature (currently tested on native, native64 and nucleo-f429zi)
• Uses the external rs-matter library, where the Matter protocol is (partly) implemented
• Interfaces with RIOT Socket API using the Module socket_embedded_nal_async_udp
• Depends on a patch of rs-matter, which enables the Cargo feature riot-os to make it work with RIOT
• The feature psm can be activated in Makefile with CARGO_OPTIONS += --features psm to support storing/loading runtime configurations - NOTE: This would need to be implemented dependent of the target platform!

TODO's

• Optimize memory usage and try to flash on an embedded device (tested on nucleo-f429zi and works)
• Persist certificates (DAC with Private+Public Key, PAI) in device and read after boot (atm hard-coded in src/dev_att.rs
• Persist data during runtime (like associated fabrics), maybe using riot_wrappers::vfs module - but this is still read-only
• Keep up with developments in rs-matter, where memory was already optimized lately (Shared UDP Buffer) - but new Traits would need to be implemented by the RIOT UDP Socket (see Allow buffer sharing between mDNS and Matter transport; const-ify constructors project-chip/rs-matter#138)

Testing procedure

• Follow the guides to build the chip-tool
• Build and flash the application in examples/rust-matter-light on native64 Target: BOARD=native64 make all flash term
• Discover device on network: ./chip-tool discover commissionables
• QR Code and manual pairing code for commissioning must be printed on terminal
• Commission the device using the manual pairing code (without "-") and arbitrary chosen node id (e. g. 12344321): ./chip-tool pairing code <node-id> <pairing-code>

Test supported functionality of commissioned device:

• Read product name: ./chip-tool basicinformation read product-name <node-id> 0
• Toggle On/Off state: ./chip-tool onoff on <node-id> 1
• Read On/Off state: ./chip-tool onoff read on-off <node-id> 1

See CHIP-Tool Documentation for more supported commands.

Issues/PRs references

Resolves #19929.