feat(operations): Implements Serializer and Deserializer interface

[Satyam6623165]

Features:

• Resolves deserialisation issues with previously implemented interface
• Implements serialize and deserialize methods for all node types
• Unit tests for the serialization and deserialization interface

close #12

[codecov-commenter]

Codecov Report

Merging #17 (8f22c3f) into main (b6e1e37) will increase coverage by 6.55%.
The diff coverage is 90.19%.

@@            Coverage Diff             @@
##             main      #17      +/-   ##
==========================================
+ Coverage   77.56%   84.11%   +6.55%     
==========================================
  Files           7        7              
  Lines         205      214       +9     
==========================================
+ Hits          159      180      +21     
+ Misses         39       27      -12     
  Partials        7        7              

Impacted Files	Coverage Δ
operations/defs/list_node.go	75.47% <83.87%> (+9.47%)	⬆️
operations/defs/deepcopy_util.go	69.56% <85.71%> (ø)
operations/defs/json_node.go	93.10% <91.42%> (ø)
operations/defs/register_node.go	80.00% <93.75%> (+17.03%)	⬆️
operations/defs/map_node.go	78.94% <100.00%> (+28.94%)	⬆️
operations/serializer/serializer.go	100.00% <100.00%> (ø)

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