[CDB-READER] Reading multiple CDBs

[StudioWEngineers]

When reading more than one CDB file per *.py file, currently each reader must open and closed asynchronously from the others.
e.g.:

reader_1.open()
# load some data with reader_1
reader_1.close()

reader_2.open()
# load some data with reader_2
reader_2.close()

This could be overcome if each SOFiSTiKCDBReader makes a copy of the required libraries in a temporary folder and use them exclusively to load the CDB. Then it would be possible to do something like this:

reader_1.open()
reader_2.open()
# load some data with reader_1
# load some data with reader_2
reader_1.close()
reader_2.close()

which might be useful in certain circumstances.