Add cache for DateTimeFormatter for @Format annotations

[altro3]

Minor performance improvement and memory reducer for TimeConverterRegistrar. Don't need to recreate custom DateTimeFormatter for every request / response, we can cache it.

This simple test show timings with cache and without cache:

@MicronautTest
@Property(name = "spec.name", value = "DateFormatterTest")
@Property(name = "micronaut.http.client.read-timeout", value = "30s")
class DateFormatterTest {

    private static final Logger log = LoggerFactory.getLogger(DateFormatterTest.class);

    @Inject
    MyGetClient myGetClient;

    @Test
    void test() {

        var date = LocalDate.now();
        var size = 1_000_000;
        var results = new ArrayList<Integer>(size);

        for (var i = 0; i < size; i++) {
            var startTime = System.nanoTime();
            myGetClient.formatDateTime(date);
            results.add((int) (System.nanoTime() - startTime));
        }

        results.sort(Comparator.naturalOrder());

        var sum = 0;

        // remove 5% of the best timings and 5% of the worst timings
        for (var i = size / 20; i < size - (size / 20); i++) {
            sum += (results.get(i) / 1000);
        }

        log.info("!!!!!!!!!!!!!! time = {}", Duration.ofNanos(sum * 1000L));
    }

    @Requires(property = "spec.name", value = "DateFormatterTest")
    @Client("/get")
    interface MyGetClient {

        @Get("/dateTime/{myDate}")
        String formatDateTime(@Format("yyyy-MM-dd") LocalDate myDate);
    }

    @Requires(property = "spec.name", value = "DateFormatterTest")
    @Controller("/get")
    static class GetController {

        @Get("/dateTimeQuery")
        String formatDateTimeQuery(@QueryValue @Format("yyyy-MM-dd") LocalDate myDate) {
            return myDate.toString();
        }
    }
}

Test results:

Requests count: 100_000
With cache:  PT21.427236S
Without cache: PT21.560763S

Requests count: 1_000_000
With cache: PT3M21.53591S
Without cache: PT3M24.615995S

[dstepanov]

Please target 4.3

[dstepanov]

Please cleanup updates

[altro3]

done

[altro3]

@dstepanov continue here: #10198