Include current version in profile/settings backup file name

[BornToBeRoot]

Include the current version of NETworkManager in the profile/settings filename.

<timestamp>_<version>_<orginal_filename>

. in the version should be replaced with -

Settings:

20260201010630_Settings.json -> 20260201010630_2026-3-4-0_Settings.json

Profiles:

20260201010738_test.encrypted -> 20260201010738_2026-3-4-0_test.encrypted
20260201010746_Default.xml -> 20260201010746_2026-3-4-0_Default.xml