feat(sequencer): add market map actions

[ethanoroshiba]

Summary

Added select market map actions here to the sequencer.

Background

These actions were needed for support for keeping a MarketMap in state and making changes to it as part of the oracle feature. They follow Skip's logic and apply it to our state machine.

ChangeMarkets

Takes a list of markets and either creates, updates, or removes them depending on its variant. Must be signed by an address included in the market map params' market_authorities.

• Create: Creates the markets in the market map. If no market map is found, one will be created. If any of the markets to create already exist, this action will err.
• Update: Updates the markets in the market map, matching based on Ticker.currency_pair). If no market map is found, or any market is missing a counterpart in the map, this action will err.
• Remove: Removes the markets from the market map. If a market is not found in the map, it will be ignored.

UpdateParams

Updates the market map Params, which contains the market authority addresses as well as an admin address. This will execute whether there are params in the state already or not. Must be signed by the sequencer network authority sudo address.

Changes

• Added ChangeMarkets and UpdateParams to PriceFeed action in proto, core, and sequencer.

Testing

• Added fairly exhaustive unit tests to each action's implementation module.
• Added app execution test for each action for more high-level testing.
• Added each action to all action snapshot.

Breaking Changelist

• Added new actions which break app hash due to adding new information to state.
• Added ALICE_ADDRESS to market authorities in testing genesis, breaking two more snapshots.

[noot]

looks good, only a few minor comments!

[joroshiba]

Reviewed only the protos so far.

[ethanoroshiba]

Noting that this needed to be moved into the enum variants' check_and_execute functions, since ChangeMarkets validates against Params.market_authorities and UpdateMarketMapParams against sudo.