Add OpenXmlCellValue for per-cell formulas and styles on export - #1021

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Possible null reference argument for parameter 'instance' in 'object? MiniExcelMemberAccessor.GetValue(object instance)'.

Possible null reference argument for parameter 'key' in 'object IDictionary<string, object>.this[string key]'.

Argument of type 'List<MiniExcelColumnMapping>' cannot be used for parameter 'mappings' of type 'List<MiniExcelColumnMapping?>' in 'CellWriteInfo[] AsyncEnumerableWriteAdapter<T>.GetRowValues(T currentValue, List<MiniExcelColumnMapping?> mappings)' due to differences in the nullability of reference types.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Possible null reference argument for parameter 'name' in 'int IDataRecord.GetOrdinal(string name)'.

Possible null reference argument for parameter 'key' in 'object IDictionary<string, object>.this[string key]'.

Argument of type 'List<MiniExcelColumnMapping>' cannot be used for parameter 'mappings' of type 'List<MiniExcelColumnMapping?>' in 'CellWriteInfo[] EnumerableWriteAdapter.GetRowValues(object currentValue, List<MiniExcelColumnMapping?> mappings)' due to differences in the nullability of reference types.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Nullability of reference types in value of type 'List<MiniExcelColumnMapping?>' doesn't match target type 'List<MiniExcelColumnMapping>'.

Cannot build an overlay database because build-mode is set to "undefined" instead of "none". Falling back to creating a normal full database instead.

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