OneString is a 0 GC ToString solution.
Support expansion, easy to use.
*** FEATURES ***
0 GC：To String takes 0 GC.
0 GC：OneString.Concat takes 0 GC.
Support int、long、float、double、bool, etc.
Support the setting of the number of decimal places, and the default is to keep two decimal places.
Easy to use: Just use ToOneString() function, it will return a string.
Support expansion and modification.
Contains complete code and demo scenarios.
