feat: transform data using oson

[KnorpelSenf]

Compresses the data the conversation plugin stores in the session by converting it using oson. This

• reduces the size
• adds support for countless data types

Closes #28.

[codecov-commenter]

Codecov Report

Base: 97.65% // Head: 96.48% // Decreases project coverage by -1.16% ⚠️

Coverage data is based on head (2bbc53f) compared to base (f2f3aec).
Patch coverage: 88.99% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
- Coverage   97.65%   96.48%   -1.17%     
==========================================
  Files           4        4              
  Lines         726      826     +100     
  Branches      111      119       +8     
==========================================
+ Hits          709      797      +88     
- Misses         16       28      +12     
  Partials        1        1              

Impacted Files	Coverage Δ
src/conversation.ts	96.14% <88.46%> (-1.38%)	⬇️
src/deps.deno.ts	100.00% <100.00%> (ø)

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