Use bundled komodod to start DEX blockchain

[satindergrewal]

Using preinstalled komodod from system's path:

• start DEX blockchain
• stop DEX blockchain
• add chain params such as handle, recvZaddr and recvTaddr to DEX komodod command

Using bundled Komodod

• start DEX blockchain
• stop DEX blockchain
• add chain params such as handle, recvZaddr and recvTaddr to DEX komodod command