* core/types, params: add blob transaction type, RLP encoded for now

* all: integrate Cancun (and timestamp based forks) into MakeSigner

* core/types: fix 2 back-and-forth type refactors

* core: fix review comment

* core/types: swap blob tx type id to 0x03

This change implements withdrawals as specified in EIP-4895.
Co-authored-by: lightclient@protonmail.com <lightclient@protonmail.com>
Co-authored-by: marioevz <marioevz@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Felix Lange <fjl@twurst.com>

* all: polish tests

* core: apply feedback from Guillaume

* core: fix comment

* golangci: typo
Signed-off-by: Delweng <delweng@gmail.com>

* golangci: add whietspace
Signed-off-by: Delweng <delweng@gmail.com>

* *: rm whitesapce using golangci-lint
Signed-off-by: Delweng <delweng@gmail.com>

* cmd/puppeth: revert accidental resurrection
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

* eth: request ID based message dispatcher

* eth: fix dispatcher cancellation, rework fetchers idleness tracker

* eth/downloader: drop peers who refuse to serve advertised chains

* accounts/abi/bind: fix bounded contracts and sim backend for 1559

* accounts/abi/bind, ethclient: don't rely on chain config for gas prices

* all: enable London for all internal tests

* les: get receipt type info in les tests

* les: fix weird test
Co-authored-by: Martin Holst Swende <martin@swende.se>

This changes how the downloader works, a little bit. Previously, when block sync started,
we immediately started filling up to 8192 blocks. Usually this is fine, blocks are small
in the early numbers. The threshold then is lowered as we measure the size of the blocks
that are filled.

However, if the node is shut down and restarts syncing while we're in a heavy segment,
that might be bad. This PR introduces a more conservative initial threshold of 2K blocks
instead.

* eth/downloader: refactor downloader + queue

downloader, fetcher: throttle-metrics, fetcher filter improvements, standalone resultcache

downloader: more accurate deliverytime calculation, less mem overhead in state requests

downloader/queue: increase underlying buffer of results, new throttle mechanism

eth/downloader: updates to tests

eth/downloader: fix up some review concerns

eth/downloader/queue: minor fixes

eth/downloader: minor fixes after review call

eth/downloader: testcases for queue.go

eth/downloader: minor change, don't set progress unless progress...

eth/downloader: fix flaw which prevented useless peers from being dropped

eth/downloader: try to fix tests

eth/downloader: verify non-deliveries against advertised remote head

eth/downloader: fix flaw with checking closed-status causing hang

eth/downloader: hashing avoidance

eth/downloader: review concerns + simplify resultcache and queue

eth/downloader: add back some locks, address review concerns

downloader/queue: fix remaining lock flaw

* eth/downloader: nitpick fixes

* eth/downloader: remove the *2*3/4 throttling threshold dance

* eth/downloader: print correct throttle threshold in stats
Co-authored-by: Péter Szilágyi <peterke@gmail.com>