Possibility to get the total number of tokens from the explorer

[robvanmieghem]

[GlenDC]

Is this urgent? Otherwise it can probably wait until R&D is finished (see: threefoldtecharchive/rivine#612) as a first phase that can be a separate exlorer module, so it doesn't take too long to be able to be used. As a second phase it can replace the current exlorer module, but if it is too urgent to wait for that we can of course already out in such a phase 1 manner. In the GraphQL explorer this and much more is provided.

As there is no v1.3 launch date planned for now anyhow I think that should be possible.
But if has to be done by early next week I could also quickly hack it back into the old explorer, even though it has no future.

More clarity can be given on Monday where I plan to do a small internal team demo, hope to see you there @robvanmieghem.