Unintuitive location of msg_def of django implementation

[MatyMatrix]

Currently, the message definition used for intercepting messages is located in the opt folder (../config/mig-t/msg_def.json:/opt/BurpSuiteCommunity/msg_def.json, taken form docker-compose file of Django implementation). It would be more appropriate to place it within the target folder associated with the search/select button or implement an auto-selection mechanism. In this approach, all configuration files would be placed in a designated folder after the build, allowing mig to automatically locate the required files.