Add usage analytics for last 30 days

### What problem are you trying to solve?

I want to know how far I'm from the maximum usage of my current plan, something like how much requests the server has received and the limit of requests number, same for bandwidth, and kv storage & reads & writes.

### Describe the solution you'd like

I don't need fancy diagrams and charts, but just something like the following:
500k/1m requests
50gb/100gb bandwidth
100mb/1gb of kv storage
200k/450k of kv reads
100k/300k of kv writes

Having these usage analytics in written way is so cool and enough for me, maybe latter you can turn them into charts, but in my opinion charts are not necessary for developers right now as much as the usage analytics itself.

### Describe alternatives you've considered

I don't have any alternatives, I think it can be written or explained with charts.

### Documentation, Adoption, Migration Strategy

It can be added to the [account overview page](https://dash.deno.com/account/overview), or to a new page that can be accessed from the navbar there (Overview, Projects, Settings, Usage).