Update App AnteHandler

[austinabell]

• Changes from default antehandler to AnteHandler that was built for ethereum transactions
• Adds a temporary measure of allowing tendermint Key to sign genesis transactions to be able to fund a validator to start the node to not have to build out Implement Genesis utility modules #81 as it is out of the scope of the current work
• Allows the gas consumption logic to be included and usable when implementing the other functionality of an Ethereum transaction within the CosmosSDK handler framework for a tx

This includes the functionality of the Application previously, allowing the previous flow for starting the app, for example as so:

make install 
rm -rf ~/.emint*
emintd init moniker --chain-id testchain
emintcli config chain-id testchain
emintcli config output json
emintcli config indent true
emintcli config trust-node true
emintcli keys add austin
<password>
<password>
emintd add-genesis-account $(emintcli keys show austin -a) 1000photon,100000000stake
emintd gentx --name austin
<password>
emintd collect-gentxs
emintd validate-genesis
emintd start

Implements #71, and I will create an issue to remove the workaround for the genesis tx and find a solution that is compatible for anyone using the evm module.

[ansermino]

👍

I do get this error when I hit ctl-c, I suspect its negligible though:

E[2019-08-19|10:52:00.657] Not stopping BlockPool -- have not been started yet module=blockchain impl=BlockPool