[bug] Update agent.get_config() to return a platform and type string instead of int.

[hulto]

Describe the bug
agent.get_config() returns an int for platform should return a string representation PLATFORM_WINDOWS or PLATFORM_LINUX etc.

Resolution
Update the /workspaces/realm/implants/imixv2/src/agent.rs get_config implementation to return platform and type as a human readable string instead of the Enums int value.