Add plugin.yml api-version compatibility check before installation

[Nlkomaru]

Summary

Check plugin.yml api-version compatibility before installing a plugin to prevent incompatible plugins from being installed.

Workflow

1. Download plugin JAR to temp directory
2. Extract and parse plugin.yml from the JAR
3. Read api-version field from plugin.yml
4. Compare with server's Minecraft API version
5. Warn or block installation if incompatible

Features

• Extract plugin.yml from JAR file in temp directory
• Parse api-version field (e.g., 1.20, 1.21)
• Compare with current server API version
• Display warning for incompatible plugins
• Option to force install with --force flag
• Show detailed compatibility info in plugin info command

Example

# plugin.yml
name: ExamplePlugin
version: 1.0.0
api-version: 1.21

If server is running 1.20, warn user:

⚠️ Warning: This plugin requires api-version 1.21, but server is running 1.20