Change CLI arguments to a config file

[ilija-lazoroski]

Description

Since this tool uses CLI arguments to do a lot of things we should probably move to a config file which will be specified in the plugin's directories. That config file will need to be configured per plugin and the only command to run will be build_agent_plugin .. We didn't do that in the first place because we thought that the first thing anyone will look at will be CLI arguments to configure.

Tasks

• Create AgentPluginOptions pydantic model with needed fields ( same as we have for CLI arguments )
• Read plugin's build.{yaml, yml} and validate it to AgentPluginOptions
• Use those options everywhere where needed