Add query all channels command

[ancazamfir]

Closes: #568

Description

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For contributor use:

• Updated the Unreleased section of CHANGELOG.md with the issue.
• If applicable: Unit tests written, added test to CI.
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Updated relevant documentation (docs/) and code comments.
• Re-reviewed Files changed in the Github PR explorer.

[codecov-io]

Codecov Report

Merging #570 (aed5ac7) into master (b1b37f5) will increase coverage by 32.4%.
The diff coverage is 67.4%.

@@            Coverage Diff            @@
##           master    #570      +/-   ##
=========================================
+ Coverage    13.6%   46.1%   +32.4%     
=========================================
  Files          69     139      +70     
  Lines        3752    9218    +5466     
  Branches     1374       0    -1374     
=========================================
+ Hits          513    4251    +3738     
- Misses       2618    4967    +2349     
+ Partials      621       0     -621     

Impacted Files	Coverage Δ
...application/ics20_fungible_token_transfer/error.rs	0.0% <0.0%> (ø)
...pplication/ics20_fungible_token_transfer/events.rs	0.0% <ø> (ø)
...ion/ics20_fungible_token_transfer/msgs/transfer.rs	0.0% <0.0%> (ø)
modules/src/events.rs	0.0% <0.0%> (ø)
modules/src/ics02_client/error.rs	100.0% <ø> (ø)
modules/src/ics02_client/raw.rs	0.0% <0.0%> (ø)
modules/src/ics03_connection/error.rs	100.0% <ø> (+66.6%)	⬆️
modules/src/ics03_connection/msgs/conn_open_try.rs	86.7% <ø> (ø)
modules/src/ics03_connection/version.rs	97.6% <ø> (ø)
modules/src/ics04_channel/channel.rs	77.2% <ø> (+62.1%)	⬆️
... and 260 more

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[adizere]

Looks good.

[adizere]

FYI: There may be conflicts here if we merge #565 before this PR.