HCK-12311: add private key file validation to key pair connection#208

chulanovskyi-bs merged 2 commits intodevelophackolade/Snowflake:developfrom

HCK-12311-snowflake-key-pair-auth-extend-ability-to-select-more-file-extensions-pem-p-8-crt-cert-as-well-as-allhackolade/Snowflake:HCK-12311-snowflake-key-pair-auth-extend-ability-to-select-more-file-extensions-pem-p-8-crt-cert-as-well-as-allCopy head branch name to clipboard