Operator env values managments is complicated

[makasim]

The operator is configured using environment variables, defined via struct annotations (see example). These variables are parsed and populated using the caarlos0/env/v11 library.

However, this approach has several drawbacks:

• Placeholders do not respect prefixes. To make it work, a hack is required.

• To extract environment variable descriptions, the Go source file must be parsed manually, which in turn must be included in the Dockerfile.

• Environment variable names are composed dynamically, making it difficult to search for them by full name. This also results in redundant prefixes like VM_VLOGSDEFAULT_IMAGE or VM_VMALERTDEFAULT_VERSION.

• The library adds unnecessary complexity without providing sufficient flexibility for customization or introspection.

Simplifying env management would improve maintainability, ease configuration, and reduce friction for development and usage.