fix(cpn): Add radio specific name and label validators

[elecpower]

Fixes #4603

Summary of changes:

• change Utf8 to Latin1
• add radio lcd type name and label validators based on firmware permitted characters
• validate names and labels on yaml decode and replace an invalid character with a space. Note: Leading and trailing spaces are removed.
• use new validators for GUI validation and ensure all name fields are validated

Notes

• needs a non-English locale user to test to ensure Qt is not localising the regular expressions.