Description:

Berry int64 constructor now supports additional argument types:

• int (no change), converts int32 to int64, ex: int(42)
• real, converts floating point to int64, event if the float is larger than max 32 bits int, ex: int(2e12)
• string, parses a string to int64, ex: int64("1000000000000")
• bool, true converts to 1, false converts to 0
• int64, copies the value to a new instance.
• nil converts to 0
• any other value raises an error

Small fixes to remove compilation warnings

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.2.7.7
• The code change is tested and works with Tasmota core ESP32 V.3.0.5
• I accept the CLA.

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