feat: add new enum for compression setting

[Johanneshn]

Introduce a new enum to the public API, allowing consumers to use it instead of relying on internal dependencies (ParquetSharp)

Before

using DeltaLake;
using ParquetSharp;

.... 

table = new DeltaTable.Builder()
            .FromTable(table)
            .Add(data, options => { options.Compression = Compression.Brotli; })
            .Build();

After

using DeltaLake;

.... 

table = new DeltaTable.Builder()
            .FromTable(table)
            .Add(data, options => { options.Compression = DeltaCompression.Brotli; })
            .Build();

Not sure about the naming, DeltaCompression. Didn't go with Compression just to avoid confusion and collisions

[Johanneshn]

Could not see that compression from the action func where actually used here, so added this.
Perhaps I'm missing something

[johnsusi]

Nice catch :D