Fix sen5x floats and units

[tyeth]

Description:

Adds translatable units, particulate matter name, dewpoint, supports fahrentheit, and fixes use of %f instead of %*_f

Related issue (if applicable): fixes issues raised in discussion #15463

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works with Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works with Tasmota core ESP32 V.2.0.6
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[arendst]

Great! Thx.