Clean-up for the first release (and/or handover to Fellows)

[bkontur]

@antkve

• Fix XCM message with trap:
• People: Msg accepted, Bulletin: msg received, People: msg delivered
• finish tests for larger MB packets to use actual config instead of mock
• bulletin-polkadot let's generate new codegen for the substrate-relay
  • split client-rococo-bulletin and client-polkadot-bulletin
• add frame_metadata_hash_extension::CheckMetadataHash<Runtime>, to the bulletin-polkadot (also adjust parity-bridges-common)
• [PoP] Incentives Bulletin for Validators #30
• add route for governance calls from people

@bkontur

• prepare DevOps launch issue
• check prometheus metrics /metrics
• Setup InitializeData for People Grandpa to the Bulletin genesis (so after live run, we can start relaying people finality)

TODO

• setup docker image generation for Bulletin node
• move all the deps as workspace dependencies
• remove unused deps
  • when cargo check: warning: the following packages contain code that will be rejected by a future version of Rust: trie-db v0.30.0 note: to see what the problems were, use the option --future-incompat-report, or run cargo report future-incompatibilities --id 1``
• construct_runtime + default syntax
• change to use unstable2507 deps instead of git ref
• previous point also depends on if we go with: [PoP] Add root mapping for Polkadot OpenGov/People origins for calls managing the validator/relayer set #20
• Decide/confirm final NetworkId for Bulletin #28
• remove sudo pallet
• check XCM cfg and TODOs
• setup, check and generate correct weights
  • TODO [bridge]: is it ok to use FixedWeightBoundshere? We don't have thepallet-xcm`` change
  • for dispatch_weight use MessagesPalletWeights::<T, I>::message_dispatch_weight(payload_size)
• clean the Rococo/Polkadot stuff, constants and so on:
  • bp_bridge_hub_rococo::EXTRA_STORAGE_PROOF_SIZE
  • Add feature flag support for Rococo vs Polkadot #26
• Validate all the constants on both sides
  • e.g. MaxAuthorities
• remove and clean all the README.md - Simple README.md documentation update #29

TODO fmt

• align licences
• align file headers
• clippy/fmt/taplo/zepter
• remove what is really not needed
• do we need scripts/init.sh?
• check up testnet deployment
• ...

Questions

• Decide where to put final runtime
  • We could possibly split this repo, and move runtime directory with pallets directly to the fellows repo
  • And here just stays node custom stuff

[bkontur]

@antkve could you please check at least TODO (1) and TODO (2) next week?