enh(snmp_standard::mode::interface) Implement locking when accessing the cache

[scresto31]

Description

Implement lockfile into interfaces.pm

Fixes # CTOR-2298

Type of change

• Patch fixing an issue (non-breaking change)
• New functionality (non-breaking change)
• Functionality enhancement or optimization (non-breaking change)
• Breaking change (patch or feature) that might cause side effects breaking part of the Software

Summary by Aikido

Security Issues: 0	Quality Issues: 0	Resolved Issues: 0

🚀 New Features

• Added new centreon::plugins::lockfile module for lockfile management.

⚡ Enhancements

• Integrated lockfile handling into snmp_standard::mode::interfaces for cache access.
• Included lockfile.pm in fatpack packaging common_files for bundled plugins.

🔧 Refactors

• Removed explicit lockfile entry from plugin pkg.json files list.
• Replaced Digest::MD5 usage with Digest::SHA sha256_hex in interfaces.
• Adjusted statefile initialization condition in templates::counter for clarity.

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