Add support for the IsoApplet (Java Card applet)

The IsoApplet can be found here:
https://github.com/philipWendland/IsoApplet
Add read/write support for this applet, including RSA and
ECC support.
IsoApplet: set lock when doing command chaining
Merge branch 'upstr-ec-prkeybits' into master-fixed
Merge branch 'upstr-eckeys-alg_params' into master-fixed
Merge branch 'upstr-iso7816-dec' into master-fixed
EC key storing: use the correct parameters

When trying to import EC keys onto a card with pkcs15-init, the
params.ec of sc_pkcs15init_prkeyargs or pubkeyargs had not been
initialized. In this case, use (or point to) the parameters of the
actual key contained in the same struct.
Merge branch 'upstr-eckeys-alg_params' into master-fixed