Rename all outTx mentions as outbound and all inTx as inbound

[lumtis]

Describe the Issue
There are place were we use both of these terms for the same representation. We should do some renaming for consistency.

I think outbound and inbound are nicer names

[ws4charlie]

Just put a bit more background here. The inTx and outTx are abbreviations for inbound transaction and outbound transaction. Zetaclient also uses in logging, for instance confirmed outtx hash: 0xd2eba..... for chain 1 nonce 9718. If there are places to indicate inbound/outbound transaction, the intx/outtx will probably still one of good choices.

[lumtis]

Just put a bit more background here. The inTx and outTx are abbreviations for inbound transaction and outbound transaction. Zetaclient also uses in logging, for instance confirmed outtx hash: 0xd2eba..... for chain 1 nonce 9718. If there are places to indicate inbound/outbound transaction, the intx/outtx will probably still one of good choices.

The is that inbound is a tx by definition, so it simplifies and remove ambiguity these are two different things