node: add app version to ABCI info query response

[tzemanovic]

Describe your changes

Checklist before merging

• If this PR has some consensus breaking changes, I added the corresponding breaking:: labels
  • This will require 2 reviewers to approve the changes
• If this PR requires changes to the docs or specs, a corresponding PR is opened in the namada-docs repo
  • Relevant PR if applies:
• If this PR affects services such as namada-indexer or namada-masp-indexer, a corresponding PR is opened in that repo
  • Relevant PR if applies:

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 74.32%. Comparing base (9c8bb71) to head (120f7ca).
Report is 43 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/node/src/shell/mod.rs	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4259      +/-   ##
==========================================
+ Coverage   74.05%   74.32%   +0.26%     
==========================================
  Files         345      345              
  Lines      109782   112097    +2315     
==========================================
+ Hits        81303    83320    +2017     
- Misses      28479    28777     +298     

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