Implement character restriction for form fields to latin fonts

[f1sh1918]

Is your feature request related to a problem? Please describe.
Currently we have the issue that not supported characters could be injected in our font that would break the pdf generation, since its only supports the used latin font (f.e. helvetica)

Describe the solution you'd like

• there is already a function containsOnlyLatinAndCommonCharset added
• use this function to also check other extension form fields to ensure that card creation and csv card creation will not break with non latin charset

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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