feat: change KMS interface for Data Integrity

[mishasizov-SK]

Title: Change KMS interface for Data Integrity.

Summary:

1. Introduced private KMS interface for ecdsa2019 Data integrity suite with only onte method.
2. Made publicKeyBytesToHandle function as exported from localkms package and used it in ecdsa2019 Data integrity suite verifier. The reason for it is that method

   func (l *LocalKMS) PubKeyBytesToHandle(pubKey []byte, kt kmsapi.KeyType, opts ...kmsapi.KeyOpts) (interface{}, error) {
   return publicKeyBytesToHandle(pubKey, kt, opts...)
   }

   does not use receiver and func PublicKeyBytesToHandle can be used independently.

[codecov[bot]]

Codecov Report

Merging #3621 (934c9d7) into main (cce322d) will decrease coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #3621      +/-   ##
==========================================
- Coverage   86.94%   86.93%   -0.01%     
==========================================
  Files         367      367              
  Lines       50020    50020              
==========================================
- Hits        43490    43487       -3     
- Misses       4945     4947       +2     
- Partials     1585     1586       +1     

Files Changed	Coverage Δ
component/kmscrypto/kms/localkms/localkms.go	81.42% <100.00%> (ø)
component/kmscrypto/kms/localkms/pubkey_reader.go	75.57% <100.00%> (ø)
.../models/dataintegrity/suite/ecdsa2019/ecdsa2019.go	91.95% <100.00%> (-1.73%)	:arrow_down: