* added fallback to go's mime detection
* added test for getting mime
* added err check
* added err check
* removing import alias for builtin mime and aserting error for adding mime type.
* removing import alias for builtin mime and aserting error for adding mime type.
* added fallback to go's mime detection
* added test for getting mime
* added err check
* added err check
* removing import alias for builtin mime and aserting error for adding mime type.
* removing import alias for builtin mime and aserting error for adding mime type.
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Co-authored-by: René Werner <rene.werner@verivox.com>
