[Feature] Custom field types

[larsbo]

Problem to Solve

It should be possible to add own field types, especially third party plugins like
https://filamentphp.com/plugins/asmit-nepali-upload or https://filamentphp.com/plugins/saade-autograph.

Proposed Solution

Make the FieldRenderer extendable

Benefits

No response

Alternatives Considered

No response

Additional context or mockups

No response