feat: initialise a new totals tab with basic UI

[meta-boy]

A new tab named 'Stats' with a simple UI that shows the group-level spending summary. Can be further extended to show other stats, charts, etc.
closes #93

Preview:

[justcallmelarry]

I don't have much to contribute here, but I thought I would suggest using "Stats" (or similar) instead of "Totals" as you could then expand it with other things, like spending charts etc raised in #82

[meta-boy]

Oh I agree. That would be much better. I was just making it closer to what splitwise has to offer but definitely could go with "Stats" and further add spending charts to it like you mentioned

[justcallmelarry]

I'm also wondering if this takes into account not having a default active user set? It looks like it's still going through all of the expenses when it could just exit the functions in case the active user is '' without doing any calculations (this is an improvement I would suggest in either case).
But will all the boxes still render? imo Total you paid for and Your total share should not show if you do not have an active user set.

[meta-boy]

I'm also wondering if this takes into account not having a default active user set? It looks like it's still going through all of the expenses when it could just exit the functions in case the active user is '' without doing any calculations (this is an improvement I would suggest in either case).
But will all the boxes still render? imo Total you paid for and Your total share should not show if you do not have an active user set.

Agreed, will make the change

[justcallmelarry]

I'm also wondering if this takes into account not having a default active user set? It looks like it's still going through all of the expenses when it could just exit the functions in case the active user is '' without doing any calculations (this is an improvement I would suggest in either case).
But will all the boxes still render? imo Total you paid for and Your total share should not show if you do not have an active user set.

Agreed, will make the change

You can still wait for @scastiel to have some input 😄 he might have other previously unknown plans that clashes with the implementation for example.
Just so that you do not spend time on changes for no reason.

Just wanted to weigh in with my thoughts

[scastiel]

That’s great, thanks for the contribution! We’ll be able to use the same tab to offer stats by category 😉

[meta-boy]

That’s great, thanks for the contribution! We’ll be able to use the same tab to offer stats by category 😉

oh cool, maybe i can contribute to that too :D