Add content from links to context

[Konard]

We can start by supporting only files with text/plain MIME type.

[Konard]

Together with @Tand-Anthros we found that Copilot and Bind from Microsoft cannot go to links from GitHub.

[Konard]

Example in telegram bot:
https://github.com/deep-foundation/russian-laws-bot/blob/6c176bc44b03bb6d57a66d79665f34c05d729d2a/main.py#L165-L168

The place in code that should be updated:

chatgpt-azure-discord-listener/index.ts

Lines 81 to 93 in 4bc064c

	if (message.reference) {
	const replyToMessageId = message.reference.messageID;
	console.log({replyToMessageId});
	const replyToMessage = await message.fetchReference();
	const replyText = replyToMessage.content;
	console.log({replyText});
	messageContent = `${replyToMessage.content}
	---
	${message.content}`;
	} else {
	messageContent = message.content
	console.log({messageContent})
	};