Add support for more types as output of thing actions

[lolodomo]

Byte
Short
Long
BigDecimal
QuantityType
LocalDate
LocalTime
LocalDateTime
ZonedDateTime
Instant
Duration

[lolodomo]

@florian-h05 : why not simply using this for all other types ?

output.put(MODULE_RESULT, result.toString());

This would avoid the warning "Non compatible return type" and would provide descent result for date or time types for example ?

[florian-h05]

why not simply using this for all other types ?

A. Not all data types implement proper toString().
B. Keep in mind this is also what is used when adding Thing actions to UI-based rules, where one needs to be able to do something useful with the output string.

I would rather only convert selected data types to string, those would be QuantityType, LocalTime, LocalDate, LocalDateTime, ZonedDateTime (we can add more, just to mention a few).

[lolodomo]

@florian-h05 : I added few more types. Tested for each of them.

[florian-h05]

One comment, otherwise LGTM.

[florian-h05]

LGTM now, thanks!

[holgerfriedrich]

LGTM