feat: migrate RLP to alloy-rlp (take 2)

[DaniPopes]

Supersedes #3939
Based on #4737

Contains no functional changes, just a clean migration

• from reth_rlp{,derive} to alloy_rlp (_derive imports replaced by "derive" feature)
• DecodeError has been deprecated; replaced by either alloy_rlp::Result, alloy_rlp::Error or use alloy_rlp::Error as RlpError
• small breaking change in global encode functions generics order

[codecov]

Codecov Report

Merging #4749 (726292e) into alloy (ccae4eb) will decrease coverage by 0.36%.
The diff coverage is 61.53%.

Files Changed	Coverage Δ
bin/reth/src/cli/config.rs	0.00% <ø> (ø)
crates/net/discv4/src/config.rs	54.69% <ø> (ø)
crates/net/discv4/src/error.rs	0.00% <ø> (ø)
crates/net/discv4/src/lib.rs	64.82% <0.00%> (-0.21%)	⬇️
crates/net/dns/src/lib.rs	79.09% <ø> (ø)
...ates/net/downloaders/src/test_utils/file_client.rs	80.97% <ø> (ø)
...rates/net/downloaders/src/test_utils/file_codec.rs	100.00% <ø> (ø)
crates/net/ecies/src/error.rs	0.00% <0.00%> (ø)
crates/net/eth-wire/src/capability.rs	76.25% <0.00%> (ø)
crates/net/eth-wire/src/errors/p2p.rs	70.00% <ø> (-10.00%)	⬇️
... and 62 more

... and 5 files with indirect coverage changes

Flag	Coverage Δ
integration-tests	15.98% <37.76%> (-0.56%)	⬇️
unit-tests	62.98% <52.44%> (-0.42%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
reth binary	32.11% <ø> (ø)
blockchain tree	83.80% <ø> (ø)
pipeline	88.53% <ø> (ø)
storage (db)	73.76% <100.00%> (ø)
trie	94.69% <100.00%> (-0.04%)	⬇️
txpool	50.29% <ø> (+0.46%)	⬆️
networking	77.08% <48.88%> (-0.04%)	⬇️
rpc	57.55% <0.00%> (-0.03%)	⬇️
consensus	63.15% <ø> (ø)
revm	28.40% <ø> (ø)
payload builder	8.32% <ø> (ø)
primitives	85.58% <66.66%> (-0.77%)	⬇️