Add Check for RW Session Capability When Opening PKCS#11 Session

[microshine]

Description:

When opening a PKCS#11 session in read-write (RW) mode, there may be instances where the token does not support RW sessions, leading to errors. This issue proposes the addition of a pre-check to verify that the token has the necessary capability (e.g., CKF_WRITE_PROTECTED) before attempting to open a session in RW mode.

Proposed Behavior:

• Before opening a session in RW mode, verify the token’s flags to confirm support for RW sessions.
• If the token does not support RW sessions, open it in read-only mode.