Add the Reward value of a Block in the Block Tile and Block Details Page

[acravenho]

As a Contributor, I want to see the Validator Reward earned for a Block on the Block details page and block tile on the blockscout.

Example: https://etherscan.io/block/6843636

The current reward is 1 POA plus the Gas Used that is rewarded to the Validator that validated that block. There is also an emission reward of 1 POA that is sent to an address defined in the spec.json file.
The information for block rewards is obtained from the Parity block_trace call.

Acceptance Criteria

• On the block tile, it must display the total amount of reward of the block validated; This block tile is currently located on the homepage, blocks page, and address Validations tab
• In the blocks details page, all information about the rewards must be displayed on the right bottom box (Where originally is placed the info about the Gas Used) ;
  • The Gas Used information should be reallocated to the main box of the block details (right after the nonce);
• In the block details page, it must be displayed each type of reward separately.
  • EmissionReward;
  • Gas Fee;
  • Uncle Reward (If it has);

[amandasposito]

In the block details page it must be displayed:

For core and sokol, we should see:

• Validator Reward which would be equal to the 1 POA + Gas Fee for the block.
• Emission Reward 1 POA

For mainnet and other PoW chains

• Miner Reward (gettext) Base reward + gas fee
• Uncle Reward