✨Support gpt-4-vision-preview model

    ✨ feat(compose.yaml): add OPENAI_VISION_MODEL_NAME environment variable
    ✨ feat(botservice.ts): add image support and separate user and assistant messages
    🔀 refactor(botservice.ts): make isMessageIgnored function asynchronous and add DM check
    🔧 refactor(package.json, botservice.ts, openai-wrapper.ts): update package versions and improve code organization
    🔧 refactor(types.ts, botservice.ts, openai-wrapper.ts, plugins): rename MessageData to MattermostMessageData

Author: takuya-o

compose.yaml

@@ -11,6 +11,7 @@ services:
       OPENAI_API_KEY: ${OPENAI_API_KEY}
       OPENAI_MODEL_NAME: ${OPENAI_MODEL_NAME}
       OPENAI_IMAGE_MODEL_NAME: ${OPENAI_IMAGE_MODEL_NAME}
+      OPENAI_VISION_MODEL_NAME: ${OPENAI_VISION_MODEL_NAME}
       OPENAI_MAX_TOKENS: ${OPENAI_MAX_TOKENS}
       MAX_PROMPT_TOKENS: ${MAX_PROMPT_TOKENS}
       PLUGINS: ${PLUGINS}