Add loader for TxFromTo component

[LuizAsFight]

Motivation

Currently the pending version of the component is a loading version. That is wrong.
Pending means that the transaction is pending execution on the chain, but we already know the transaction info.

This issue is to:

• Make Pending version show information about transaction, instead of full loading state
• Add a loader to show full loading state for this component

Usage example

<TxFromTo.Loader />

Possible implementations

same as other Loaders in the project, for example Transactions/TxHeaderLoader