perf: inline serializer

[cesco69]

Same as #812

This PR removes all serializer functions and fully inlines all serialization logic into a single main function.

For the future! this approach is not a performance improvements for the serializer

Benchmark

short string..............................................-6.22%
unsafe short string.......................................+7.22%
short string with double quote.............................-6.1%
long string without double quotes.........................+4.14%
unsafe long string without double quotes..................-4.09%
long string...............................................-1.27%
unsafe long string........................................+6.39%
number....................................................-5.23%
integer...................................................-9.13%
formatted date-time......................................+26.88%
formatted date............................................+0.66%
formatted time............................................+1.76%
short array of numbers....................................-0.83%
short array of integers...................................-2.58%
short array of short strings.............................-12.09%
short array of long strings..............................-12.54%
short array of objects with properties of different types..-2.9%
object with number property...............................-4.83%
object with integer property..............................-1.58%
object with short string property........................-16.04%
object with long string property..........................+3.37%
object with properties of different types.................-3.48%
simple object.............................................-0.09%
simple object with required fields........................-9.54%
object with const string property.........................+4.76%
object with const number property........................-12.32%
object with const bool property...........................+6.89%
object with const object property..........................+2.1%
object with const null property...........................-2.79%