This patch moves the ARM configuration before starting the connection process, so
that we can do some provisioning of the FreeRDP settings with the items retrieved
from Azure.
Most notably that allows us to connect directly using RDSTLS security.
* Properly split certificate_store, certificate_data, certificate and
private key functions to files
* Prefix all functions with freerdp_ to have a unique name
* Update certificate store to use one file per host instead of
known_hosts2
* Merge CryptoCert and rdpCertificate
