fw-zephyr: Add error module

Error module will log errors and provide commands to show last 10 errors and clear them

BUG=None
TEST=Test the error module logging and shell commands

Change-Id: I29145567ef6a317fba06ef43d0598eb686f654fe
Reviewed-on: https://chrome-internal-review.googlesource.com/c/chromeos/third_party/dolos/+/7112172
Reviewed-by: Udaya Kiran Ammu <udaykiran@google.com>
Commit-Queue: Udaya Kiran Ammu <udaykiran@google.com>
Tested-by: Udaya Kiran Ammu <udaykiran@google.com>
Tested-by: Samuel Jacob <samjaco@google.com>
Reviewed-by: Samuel Jacob <samjaco@google.com>