Show Chunk information in Block page

[ilblackdragon]

Currently there is absolutely no information about chunks / shards.

We should show summary of chunk information in the Block page: group tx by chunk in the details and show for each chunk total tx count, gas spent, gas limit, rent paid and other meta data available in ChunkHeader.

[frol]

Note: we need a visual design for that.

We need to review what the current Chunk model misses from the Chunk Header available from RPC.

Chunk model contains:

• block hash
• shard id (integer index)
• signature
• gas limit
• gas used
• height created
• height included

Chunk header contains (e.g. http post https://rpc.nearprotocol.com/ jsonrpc=2.0 id=dontcare method=chunk 'params:=[[1, 1]]'):

• shard id
• ~chunk hash~ (does not seem very useful to me in Explorer)
• signature
• gas limit
• gas used
• height created
• height included
• encoded length
• encoded merkle root
• balance burnt
• outcome root
• outgoing receipts root
• ~previous block hash~ (does not seem very useful to me in Explorer)
• ~previous state root~ (does not seem very useful to me in Explorer)
• rent paid
• tx root
• validator proposals
• validator reward

[ilblackdragon]

CC @jakestutzman @corwinharrell for design for this.