* Use stable Rust instead

* Vendor `ic-http` from `bitcoin-canister`

* config: Replace `reqwest` with `ic-http`

* Replace most of `ethers` with `ethers-core`

* consensus: replace `reqwest` with `ic-http`

* client: replace `ethers` with `ethers-core`

* client: Replace `gloo-timers` and `wasm-bindgen-futures` with `ic-cdk`

* Remove tokio::task::spawn_blocking

* remove ic-http/example_canister

* use ic-cdk instead of wasm-timer

* Use canister outcalls for http execution

* Remove unneeded alloc deserializing response

* Make http requests cross platform and remove ic-http

* Remove candid dep and target guard ic_cdk

* Extract cycle cost constants to separate module

* Fix deserializing responses from node

* remove ic_cdk dep from execution

* fix target guarded stuff

* feat: Minimize the time node is locked when advancing

* fix the log messages

* Add missing await in native advance method

* fix(client): Make updating `Node` lock-free

Async locks can not be used in ICP.

* use `load_full` when we don't await

* use Rc<Cell<bool>> instead of Arc<AtomicBool>

* remove tokio dependency for wasm

* use ArcSwap::from instead of ArcSwap::new

* reword comment

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