Fixes for elements 21 and 22

[andreabonel]

Fixes for elements 21:

• wallet creation
• createrawtransation (new format)

Fix for elements 22:

• decoderawtransaction (new format)

Fixes: #4 and #5

[wintercooled]

Tested ACK:

git clone https://github.com/andreabonel/liquid-swap.git
cd liquid-swap

git checkout fixes-for-elements-21-and-22 

pip install .[GUI,CLI]

. ./tools/set_env.sh $HOME/elements-0.22.0.2/bin

./tools/start_liquid_instances.sh

$ e1c getnewaddress
el1qqt6y5eywtaxchr8gx2g3xau7my8dvytvze50cnx6e82mwd86g6cmchaluvgp048nrvs9276m8slyel4zl52kwzwlqd70ec0va

$ e1c generatetoaddress 1 el1qqt6y5eywtaxchr8gx2g3xau7my8dvytvze50cnx6e82mwd86g6cmchaluvgp048nrvs9276m8slyel4zl52kwzwlqd70ec0va
[
  "9464f6f6d8f22634f2c75c7d4515ff357175c177fa5f5f7b0d9d1fd1e876bfbe"
]

$ e1c getbalance
{
  "bitcoin": 21000000.00000000
}

. ./tools/createassets.sh

$ e1c generatetoaddress 1 el1qqt6y5eywtaxchr8gx2g3xau7my8dvytvze50cnx6e82mwd86g6cmchaluvgp048nrvs9276m8slyel4zl52kwzwlqd70ec0va
[
  "9464f6f6d8f22634f2c75c7d4515ff357175c177fa5f5f7b0d9d1fd1e876bfbe"
]

$ e1c getbalance
{
  "bitcoin": 20999899.99999371,
  "0ea147786fc5e3db56af56306fbf8acae4c91ba7828a68a352a8723b326152cd": 10.00000000
}

$ e2c getbalance
{
  "bitcoin": 99.99999636,
  "7e67ff31e4d26f88fed62525442d35d343f6cbb715a19208a4b0d7e2437eb646": 20.00000000
}

liquidswap-cli --regtest -c $C1 propose $ASSET1 1 $ASSET2 2 --output proposal.txt
liquidswap-cli --regtest -c $C2 info proposal.txt
liquidswap-cli --regtest -c $C2 accept proposal.txt --output accepted.txt
liquidswap-cli --regtest -c $C1 info accepted.txt
liquidswap-cli --regtest -c $C1 finalize accepted.txt --send

e1c generatetoaddress 1 el1qqt6y5eywtaxchr8gx2g3xau7my8dvytvze50cnx6e82mwd86g6cmchaluvgp048nrvs9276m8slyel4zl52kwzwlqd70ec0va
[
  "13f8eeadcf05834e374c81d8d8754a5e5c334f90779bf3bdeb7067b5fb2352e6"
]

e1c getbalance
{
  "bitcoin": 20999899.99998995,
  "7e67ff31e4d26f88fed62525442d35d343f6cbb715a19208a4b0d7e2437eb646": 2.00000000,
  "0ea147786fc5e3db56af56306fbf8acae4c91ba7828a68a352a8723b326152cd": 9.00000000
}

e2c getbalance
{
  "bitcoin": 99.99999260,
  "7e67ff31e4d26f88fed62525442d35d343f6cbb715a19208a4b0d7e2437eb646": 18.00000000,
  "0ea147786fc5e3db56af56306fbf8acae4c91ba7828a68a352a8723b326152cd": 1.00000000
}

./tools/stop_liquid_instances.sh

[LeoComandini]

utACK 47e9941, with comments

[LeoComandini]

utACK 14d459a

[LeoComandini]

Thanks @andreabonel !