feat: add MarketSummary query

[toteki]

Description

Adds a query which groups a set of queries the frontend often executes together.

Needs discussion:

• Does frontend exchange_rate requested in client #434 refer to asset's USD price (x/oracle query) or its uToken exchange rate (x/leverage query)? Currently returns both.
• To avoid mixing usd totals and token totals in the query response, would it be acceptable to return token market size (e.g. 5M ATOM instead of usd market size (e.g. 100M USD)? Frontend would then multiple by oracle price.

closes: #893

---

Author Checklist

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.

I have...

• included the correct type prefix in the PR title
• added appropriate labels to the PR
• added ! to the type prefix if API or client breaking change
• targeted the correct branch (see PR Targeting)
• provided a link to the relevant issue or specification
• added a changelog entry to CHANGELOG.md
• included comments for documenting Go code
• updated the relevant documentation or specification
• reviewed "Files changed" and left comments if necessary
• confirmed all CI checks have passed

Reviewers Checklist

All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.

I have...

• confirmed the correct type prefix in the PR title
• confirmed ! in the type prefix if API or client breaking change
• confirmed all author checklist items have been addressed
• reviewed state machine logic
• reviewed API design and naming
• reviewed documentation is accurate
• reviewed tests and test coverage
• manually tested (if applicable)

[codecov-commenter]

Codecov Report

Merging #894 (4746ae1) into main (d919765) will decrease coverage by 0.04%.
The diff coverage is 1.08%.

@@            Coverage Diff             @@
##             main     #894      +/-   ##
==========================================
- Coverage   51.08%   51.04%   -0.05%     
==========================================
  Files          64       64              
  Lines        9425     9431       +6     
==========================================
- Hits         4815     4814       -1     
- Misses       4365     4372       +7     
  Partials      245      245              

Impacted Files	Coverage Δ
x/leverage/types/query.pb.gw.go	0.00% <0.00%> (ø)
x/oracle/types/query.pb.gw.go	0.00% <ø> (ø)
x/leverage/keeper/grpc_query.go	5.55% <2.77%> (-0.77%)	⬇️

[toteki]

Note how nullable is true here - if oracle is down, this field will be null but the query will work.

[toteki]

Note market_size (tokens) not market_size_usd here. See discussion question in PR description

[EbrahimElbagory]

Does frontend exchange_rate requested in https://github.com/umee-network/umee-v1-client/issues/434 refer to asset's USD price (x/oracle query) or its uToken exchange rate (x/leverage query)? Currently returns both.

This is the assets USD price (double check with core dev)

To avoid mixing usd totals and token totals in the query response, would it be acceptable to return token market size (e.g. 5M ATOM instead of usd market size (e.g. 100M USD)? Frontend would then multiple by oracle price

Yes wont make any difference on the front end.

[RafilxTenfen]

The oracle price for Atom at the moment is "9.4345...." but the returned amount is oracle_price": "0.000009631755656363",

I am doing something wrong?

[toteki]

It's correct - the 10^6 difference is between uatom and ATOM because exponent = 6