Explorer: Adding a mode to view the actual content (in addition of the raw data) in the explorer

### Is your feature request related to a problem?

Currently, when we navigate in the explorer, when we came accross a transaction with content, we're only offered to see it in raw format (base64 string). It's then, not practical to see/check quickly the content without manually decoding the data (out of hand for most of the users)

### Describe the solution you'd like

A switch that allows us to see both (a button ? a tab ?)

Ex: A button "View the content" which decodes the content in base64 string into a human-friendly version (video, image, audio, etc...) of it.

### Additional context

_No response_

No files or tests are named. Start at the Explorer transaction view described in the issue and inspect how content is currently shown as a base64 string. Done means providing a switch or tab that preserves the raw view and displays the content in a human-friendly form when supported.

Written by the indexing model from the issue text.