[Feature Request] Conditional imports

[theoephraim]

Description

Allow importing a file only if a condition is met. For example:

# @import(./.env.some-file, enabled=eq(SOME_VAR, "some val")
# ---

Proposed Solution

Add a new enabled property to the @import decorator which will decide whether or not to proceed based on some boolean.

Alternatives

Currently, you could always import the file and use @disabled

Alternatively, we could think about introducing a higher level if block concept, that could enable/disable multiple arbitrary lines within the env file. Not sure it is worth the complexity.