feat: DateOnly and TimeOnly support

[DeagleGross]

In .NET6 DateOnly and TimeOnly were introduced. Current PR proposes support for those in Dapper.AOT.

I performed testing against MsSql and PostgreSql. Check DateOnlyTimeOnlyTests.cs for validating how data is being parsed from database via System.Data.Common.DbDataReader.

Here is how data is parsed and how I convert it:

SQL	db-type	c# type	DbDataReader.GetValue() returns	how converted	notes
Postgre	timestamp	DateTime	DateTime	Convert.ToDateTime()	...
MsSql	datetime	DateTime	DateTime	Convert.ToDateTime()	the only difference between Postgre and MsSql - name of "timestamp" type
Postgre	timestamp	DateOnly	DateTime	Convert.ToDateTime() -> DateOnly.FromDateTime()	...
Postgre	timestamp	TimeOnly	DateTime	Convert.ToDateTime() -> TimeOnly.FromDateTime()	...
-------
Postgre	date	DateTime	DateTime	Convert.ToDateTime()	technically date is a datetime as well, so left as is
Postgre	date	DateOnly	DateTime	Convert.ToDateTime() -> DateOnly.FromDateTime()
Postgre	date	TimeOnly	DateTime	Convert.ToDateTime() -> TimeOnly.FromDateTime()	will always return default(TimeOnly). Dont know if it is better to explicitly throw here?
-------
Postgre	time	DateTime	TimeSpan	Convert.ToDateTime() throws InvalidCastException	TimeOnly can't be a DateTime
Postgre	time	DateOnly	TimeSpan	Convert.ToDateTime() throws InvalidCastException	TimeOnly can't be a DateOnly
Postgre	time	TimeOnly	TimeSpan	cast object arg to TimeSpan -> TimeOnly.FromTimeSpan()

I have adjusted the implementation of CommandUtils.As<T> according to the table above, and then wrote integration tests (only for postgreSql).

Note: I also wrote a code to exclude non-compatible input files for unit Interceptors tests (we dont need to run .netFx tests against DateOnly.input.cs, because .netFx does not support DateOnly and TimeOnly types).

Closes #116