* docs/smpp-ota-tool: Add documentation/tutorial
* contrib/smpp-ota-tool: define commandline arguments in global scope
* contrib/smpp-ota-tool: use '-' instead of '_' in command line args
* contrib/smpp-ota-tool: fix description string (copy+paste error)
* tests/pySim-smpp2sim_test: add testcases for AES128 and AES256
* tests/pySim-smpp2sim_test/card_sanitizer: update card backup with new test keyset
