Problem: block mode is deprecated, need implement in client side

[mmsqe]

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PR Checklist:

• Have you read the CONTRIBUTING.md?
• Does your PR follow the C4 patch requirements?
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• Have you included tests for any non-trivial functionality?
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Thank you for your code, it's appreciated! :)

[codecov]

Codecov Report

Merging #1103 (70bcf5e) into main (7461e30) will increase coverage by 24.61%.
The diff coverage is 68.75%.

@@             Coverage Diff             @@
##             main    #1103       +/-   ##
===========================================
+ Coverage   22.02%   46.64%   +24.61%     
===========================================
  Files          47       81       +34     
  Lines        2996     7280     +4284     
===========================================
+ Hits          660     3396     +2736     
- Misses       2271     3524     +1253     
- Partials       65      360      +295     

Files Changed	Coverage Δ
x/cronos/client/cli/tx.go	60.29% <68.75%> (+1.81%)	⬆️

... and 50 files with indirect coverage changes