fix(core,common): add array type to primitive values (fixed values)

[omermorad]

Closes #76

[codecov-commenter]

Codecov Report

Merging #78 (11fcf97) into master (ce4c08d) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##           master      #78   +/-   ##
=======================================
  Coverage   90.84%   90.84%           
=======================================
  Files          11       11           
  Lines         142      142           
  Branches       17       17           
=======================================
  Hits          129      129           
  Misses         13       13           

Flag	Coverage Δ
adapters.nestjs	90.84% <ø> (ø)
core	90.84% <ø> (ø)
jest	90.84% <ø> (ø)

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Files Changed	Coverage Δ
packages/core/src/services/testbed-builder.ts	100.00% <ø> (ø)