refactored: refactored the decode txn molecule

[Oshioke-Salaki]

The work done in this pull request enhances the UI of the decoded transaction molecule in gold rush API by making it more informative, appealing and user friendly.

The changes made are as follows:

1. Blockly icons were added to represent sender and recipient addresses.
2. Different data were segmented into cards in order to promote separation of concerns
3. An extra card metadata was implemented so as to give more insight into the transaction. if contains data such as gas fess, miner address, txn hash e.t.c
4. More icons were added to give a colorful look. e.t.c

Below is a snap shot of a section of the new UI