feat: add CallEntry.tersify()

[unional]

BREAKING CHANGE:
renamed CallRecord to CallEntry
CallRecord represents a serializable record.
renamed CallEntry properties from arguemnts and result to inputs, output to that it works better with spread operator (because arguments is reserved).

[coveralls]

Coverage decreased (-1.6%) to 98.404% when pulling c243909 on callentry into 4bfe226 on master.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@4bfe226). Click here to learn what that means.
The diff coverage is 100%.

@@           Coverage Diff           @@
##             master    #24   +/-   ##
=======================================
  Coverage          ?   100%           
=======================================
  Files             ?      8           
  Lines             ?    133           
  Branches          ?     26           
=======================================
  Hits              ?    133           
  Misses            ?      0           
  Partials          ?      0

Impacted Files	Coverage Δ
src/createCallRecordCreator.ts	100% <100%> (ø)
src/spy.ts	100% <100%> (ø)

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[coveralls]

Coverage remained the same at 100.0% when pulling 41607f5 on callentry into 4bfe226 on master.