Compression of compressible input fields

[oganm]

Also related to #78. Gemma API accepts compressed filters as inputs. The package should set a threshold and use compression accordingly

[oganm]

• The real URL length limit of gemma is currently 8201
• memCompress returns an incomatible raw output. It doesn't even include the gzip magic number so i am unsure what it is doing. R.utils::gzip works fine but it forces reading-writing from a file which i shouldn't be forced to do

[oganm]

Every endpoint comes with a list of compressible fields. If any call URL is longer than a certain limit (5000 by default) compressible parameters will be attempted to be compressed before sending the request out