Feat: Add support for Bosch with temperature float value

[zhixuan2333]

https://docs.google.com/spreadsheets/d/1gf2wcYWTul5B5qxhGLA25nAKQwmfrvwjtUM3SG4Ty9M/edit?usp=sharing

[crankyoldgit]

First off, thanks for taking the time and effort to improve the library.
Appologies for all the suggestions/questions.

Can you please also provide some state[] corresponding to the 0.5deg additions so we can add some unit tests to verify and check the code against known-good data?

[zhixuan2333]

Can you please also provide some state[] corresponding to the 0.5deg additions so we can add some unit tests to verify and check the code against known-good data?

Mode	Hex
Cool/16.0	0xC23DBF4000FFC23DBF4000FFD5660010004B
Cool/19.0	0xC23DBF4030CFC23DBF4030CFD5660000003B
Cool/19.5	0xC23DBF4030CFC23DBF4030CFD5662000005B
Cool/20.0	0xC23DBF4020DFC23DBF4020DFD5660000003B
Cool/20.5	0xC23DBF4020DFC23DBF4020DFD5662000005B
Cool/21.0	0xC23DBF40609FC23DBF40609FD5660000003B
Cool/21.5	0xC23DBF40609FC23DBF40609FD5662000005B
Cool/22.0	0xC23DBF40708FC23DBF40708FD5660000003B
Cool/30.0	0xC23DBF40B04FC23DBF40B04FD5660000003B

and also here.
https://docs.google.com/spreadsheets/d/1gf2wcYWTul5B5qxhGLA25nAKQwmfrvwjtUM3SG4Ty9M/edit?usp=sharing