[WORK-IN-PROGRESS] Compile time key value pairs#4

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daminetreg wants to merge 3 commits intomasterfrom

feature/compile-time-key-value-pairs

Commits on Oct 28, 2021

:wink: to_json enabled for compile time static_string named field.
daminetreg
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:wink: from_json for any simple aggregate types and compile-time-named key_value_pairs.
daminetreg
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:wink: wokrking serialization of tuples to json.
daminetreg
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