Update key/list.sh

[diveshuttam]

pgpg/src/cmd/key/list.sh

Line 38 in d108baf

gpg --list-keys --with-sig-check $secret_keys && \

pgpg/src/cmd/key/list.sh

Line 42 in d108baf

gpg --list-keys --fingerprint --with-sig-check --with-colons $secret_keys && \

some scripts from #28 #40 can be same

[diveshuttam]

@dashohoxha the above functions support --colons and --raw. Is supporting them required? I checked the existing code, they are not already being used. Also I don't think they are of any help to the user. They might have been added for help for a programmer.
Also if we want to support some programmable options maybe I could add them in better way. I feel that even egpg's current output format in key: value form is better to program to than using --with-colons

[dashohoxha]

The option --raw means using the gpg output, so you don't have to replace this.
Also the --colons format is gpg specific, and you don't have to replace this either.
You only need to replace the function print_key, or the last part of the script.