MUCO to UCO in transaction movements

[Neylix]

Description

This PR update the behavior of converting MUCO to UCO. The conversion is now done during the validation in the movements.
Updated the explorer view to display the conversion

Fixes #1368

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

• Unit tests
• Update the reward address of a node (localhost:4000/settings)
  Using the chain of the new reward address, send the MUCO to another address, in the validation stamp the movement is UCO.
• Also created a transfer of MUCO before applying this PR, then applied the PR with new explorer behavior, it works as it was previously (just display MUCO)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[bchamagne]

I like what you've done with ledgerOp & consume_input, looks cleaner.

Tested and numbers are good.

PREVIOUS INPUTS

TX TRANSFER OF 0.01