Pass compressed public key in nextPublicKeySignatureSumbitted and publicKeySignatureChanged events

[1xstj]

Summary of changes
Changes introduced in this pull request:

• Pass compressed public key in nextPublicKeySignatureSumbitted and publicKeySignatureChanged events

Reference issue to close (if applicable)
Closes #703

[codecov-commenter]

Codecov Report

Patch coverage: 33.34% and project coverage change: -0.01% ⚠️

Comparison is base (b8b8c6c) 17.01% compared to head (0ca4168) 16.99%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #704      +/-   ##
==========================================
- Coverage   17.01%   16.99%   -0.01%     
==========================================
  Files          77       77              
  Lines        5617     5621       +4     
==========================================
  Hits          955      955              
- Misses       4662     4666       +4     

Files Changed	Coverage Δ
pallets/dkg-metadata/src/lib.rs	35.60% <33.34%> (-0.17%)	⬇️

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