Add Silence usage to rootCmd

[mattverse]

Closes: #668

Description

This PR sets SilenceUsage to true when creating a root command for osmosis so that RPC errors for queries and txs do not omit all the help usage commands when facing an error.

---

For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

[codecov-commenter]

Codecov Report

Merging #686 (448f698) into main (b03cc8c) will decrease coverage by 0.24%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #686      +/-   ##
==========================================
- Coverage   18.39%   18.14%   -0.25%     
==========================================
  Files         173      179       +6     
  Lines       24321    24453     +132     
==========================================
- Hits         4473     4437      -36     
- Misses      19086    19257     +171     
+ Partials      762      759       -3     

Impacted Files	Coverage Δ
x/gamm/types/pool.go	0.00% <0.00%> (-69.32%)	⬇️
x/gamm/types/pool_asset.go	0.00% <0.00%> (-68.52%)	⬇️
x/gamm/types/msgs.go	71.42% <0.00%> (-10.66%)	⬇️
x/incentives/keeper/gauge.go	54.68% <0.00%> (-9.94%)	⬇️
x/gamm/types/codec.go	40.74% <0.00%> (-1.20%)	⬇️
x/gamm/keeper/pool.go	81.08% <0.00%> (ø)
x/gamm/client/cli/tx.go	65.53% <0.00%> (ø)
x/gamm/keeper/pool_service.go	62.35% <0.00%> (ø)
x/gamm/types/marshal.go
x/gamm/types/balancerPool.pb.go
... and 14 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b03cc8c...448f698. Read the comment docs.

[ValarDragon]

utACK

Can you add a changelog entry

[mattverse]

Sure, and as mentioned, only tested in local environment.