Apply base fee to native cosmos transaction

[yihuang]

Proposal: Apply base fee to native cosmos transaction

Current behavior:

Currently, cosmos tx only uses min-gas-prices which are configured per validator, but they occupy the same block space as eth tx, which increases the base fee of eth tx, there's an asymmetric here, maybe exploitable for ddos attack.

Desired behavior:

Apply dynamic fee to both cosmos and eth txs.

Use case: [Why is this important (helps with prioritizing requests)]

Requests may be closed if we're not actively planning to work on them.

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove Status: Stale label or comment or this will be closed in 7 days.

[yihuang]

ask for reopen

• Upgrade to 0.46
• Apply the feemarket module to the new ante handler options.

Postpone to after cosmos-sdk 0.46 rollbacked to tendermint 0.34 with backported prioritized mempool.

[yihuang]

This can be supported easily after update to cosmos-sdk 0.46: #1168, shall we reopen this?