Add new "Owner" metadata member

[SchoolyB]

Current:

@@@@@@@@@@@@@@@TOP@@@@@@@@@@@@@@@
# Encryption State: 0
# File Format Version: Rel_v0.9.0_alpha
# Permission: Read-Write
# Date of Creation: May 13 2025 
# Date Last Modified: May 13 2025 
# File Size: 0 Bytes
# Checksum: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
@@@@@@@@@@@@@@@BTM@@@@@@@@@@@@@@@

New:

@@@@@@@@@@@@@@@TOP@@@@@@@@@@@@@@@
# Encryption State: 0
# Owner: <owner's username> ------------> This will help with access control checks and security
# File Format Version: Rel_v0.9.0_alpha
# Permission: Read-Write
# Date of Creation: May 13 2025 
# Date Last Modified: May 13 2025 
# File Size: 0 Bytes
# Checksum: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
@@@@@@@@@@@@@@@BTM@@@@@@@@@@@@@@@