Add bilingual README documentation for MiniIRC_simulation

[Copilot]

Adds comprehensive bilingual (Chinese/English) README.md to document the IRC server/client/bot system.

Documentation Structure

• Project overview: Feature highlights for threaded/async server implementations, client, and bot
• Installation: Python 3.7+ requirement, standard library deps, psutil (async server only)
• Quick start: Server launch, client/bot connection with accurate port defaults
  • client.py: defaults to port 6666, must specify --port 6667 for server connection
  • bot.py: defaults to port 6667, auto-prepends # to channel names
• Usage guide: IRC commands and bot commands (!hello, !slap [<username>], !whois, !list)
• Technical details: Threading vs asyncio comparison, TCP/IPv6 protocol, heartbeat mechanism
• Transparency: Known limitations, future roadmap

Key Details

All command examples use consistent English placeholders for international usability. Channel name handling differs between client (requires #) and bot (adds automatically).

Example usage:

# Start async server (requires psutil)
python server_asyncio.py

# Connect client (specify port to match server)
python client.py --host "::1" --port 6667 --name Alice --channel "#general"

# Start bot (auto-adds # to channel)
python bot.py --host "::1" --name SuperBot --channel "hello"

Original prompt

请你给这个项目添加readme介绍

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