v1.2.0 with support for MarkdownV2 formatting

This release is compatible with Gotify 2.6.1 and adds support for MarkdownV2 formatting.

Please note, I am not a developer. In fact, the implementation for MarkdownV2 formatting support was entirely written by Claude AI (as ChatGPT was unable to figure it out). I have tested it and it works perfectly for my use case: forwarding notifications from my Proxmox instance to Telegram.

The code properly handles large messages by intelligently splitting them while preserving MarkdownV2 formatting. It also splits messages at natural boundaries (such as newlines and words) whenever possible to avoid exceeding Telegram's message size limit. Each part of a split message is labeled with "(n/N)" at the top, making it easier to track the message parts. Additionally, the code includes a small delay between messages to prevent hitting Telegram's rate limits.