Improve indexer with block events

[baktun14]

Why

We currently index with messages and transaction events. Sometimes, events happen on the block level and we miss them entirely. For example, when the latest upgrade happened: https://www.mintscan.io/akash/block/24332547?sector=events

What

Instead of indexing transaction events, we need to switch to block events:

console/apps/indexer/src/chain/chainSync.ts

Line 234 in f269ffd

for (const [index, event] of blockResults.txs_results[txIndex].events.entries()) {

Block with a lot of events (chain upgrade closing deployments): https://consolerpc.akashnet.net/block_results?height=24247750
https://www.mintscan.io/akash/block/24332547?sector=events

DbSchema: https://github.com/akash-network/console/blob/f269ffd79243c57ff90fbacabdb9a0e14cf2cda2/packages/database/dbSchemas/base/transaction.ts

Possible akash events: https://github.com/akash-network/chain-sdk/blob/aa1c1e92/go/util/events/publish.go#L161-L174

Possible cosmos events: https://deepwiki.com/search/are-the-block-events-docurment_5ffc41d3-d99b-49ed-b31c-9a1f446c2735?mode=fast