feat: use ListCollector to build lists

[Tarmil]

Fixes #118

An initial naive implementation gives interesting results: memory allocations are lower for a small list, as expected, but somehow higher for a longer list and in both cases the time performance is much worse.

Method	ListLength	Mean	Error	StdDev	Gen0	Gen1	Allocated
ListCollector	10	1,693.5 ns	12.15 ns	11.37 ns	0.0420	-	560 B
AsArray	10	237.4 ns	1.38 ns	1.29 ns	0.0458	-	600 B
ListCollector	100	15,422.6 ns	101.09 ns	89.62 ns	0.4272	-	5600 B
AsArray	100	1,627.9 ns	11.57 ns	10.82 ns	0.3662	0.0019	4808 B

[Tarmil]

Of course, the memory allocation discrepancy was caused by the use of a boxing version of JsonSerializer.Deserialize. Updating System.Text.Json to a recent enough version to be able to use JsonTypeInfo solves this discrepancy. The time performance is still much worse than when using arrays though.

Method	ListLength	Mean	Error	StdDev	Gen0	Gen1	Allocated
ListCollector	10	1,555.7 ns	4.95 ns	4.39 ns	0.0229	-	320 B
AsArray	10	236.4 ns	0.78 ns	0.65 ns	0.0458	-	600 B
ListCollector	100	15,024.3 ns	39.36 ns	32.87 ns	0.2441	-	3200 B
AsArray	100	1,621.1 ns	22.94 ns	20.33 ns	0.3662	0.0019	4808 B