chore(vesting) - Migrate Event emitting to TypedEvent

[Vvaradinov]

Description

Migrate the usage of now deprecated EmitEvent to EmitTypedEvent. New events.proto is created describing each event type the vesting module emits.

Closes: ENG-1172

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PR review checkboxes:

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• added a relevant changelog entry to the Unreleased section in CHANGELOG.md
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Code maintenance:

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• written unit and integration tests
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• confirmed the correct type prefix in the PR title
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[codecov]

Codecov Report

Merging #1155 (90f8887) into main (b60aa40) will decrease coverage by 0.14%.
The diff coverage is 65.38%.

❗ Current head 90f8887 differs from pull request most recent head aa9e630. Consider uploading reports for the commit aa9e630 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1155      +/-   ##
==========================================
- Coverage   78.57%   78.43%   -0.15%     
==========================================
  Files         130      130              
  Lines        7776     7767       -9     
==========================================
- Hits         6110     6092      -18     
- Misses       1518     1524       +6     
- Partials      148      151       +3     

Impacted Files	Coverage Δ
x/vesting/keeper/msg_server.go	84.84% <65.38%> (-4.32%)	⬇️

[ramacarlucho]

Can you fix the linter error?

[GAtom22]

Great work @Vvaradinov!! LGTM!

[fedekunze]

LGTM. Left one suggestion and one question