Implement conditions for prompt segments

Problem/Motivation

Conditions can enable to include/exclude prompt segments depending on context variables.

Steps to reproduce

Proposed resolution

Remaining tasks

• ✨ Implement tokens support Active
• ✨ Allow to pass variables to aiprompt programatically Active
• Create condition plugin, which would allow to setup conditions based on variables/tokens available
• Attach condition configuration to prompt segments.
• Display on preview what conditions are selected

User interface changes

API changes

Data model changes