refactor: remove callbacks from metadataParse

[mShan0]

Would it be a good idea to create a new stream parser-style class to handle these parsers?

Planning to move the parser position reset upon retry into metadataParse.

[codecov]

Codecov Report

Merging #1470 (92f30ed) into master (5015634) will decrease coverage by 0.00%.
The diff coverage is 84.84%.

@@            Coverage Diff             @@
##           master    #1470      +/-   ##
==========================================
- Coverage   80.50%   80.50%   -0.01%     
==========================================
  Files          91       91              
  Lines        4669     4708      +39     
  Branches      856      860       +4     
==========================================
+ Hits         3759     3790      +31     
- Misses        634      641       +7     
- Partials      276      277       +1     

Impacted Files	Coverage Δ
src/value-parser.ts	81.94% <50.00%> (ø)
src/token/colmetadata-token-parser.ts	70.83% <60.00%> (-5.36%)	⬇️
src/token/returnvalue-token-parser.ts	73.33% <70.00%> (-15.56%)	⬇️
src/metadata-parser.ts	92.20% <92.00%> (+0.20%)	⬆️
src/connection.ts	65.24% <0.00%> (+0.09%)	⬆️

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