Add comprehensive Electron packaging documentation

Add detailed guide for bundling libssh with Electron applications:
- Platform-specific instructions (Linux, macOS, Windows)
- electron-builder configuration examples
- Library path setup and runtime configuration
- Post-build scripts for macOS library fixing
- Complete testing procedures
- Troubleshooting guide for common issues
- CI/CD integration examples
- Best practices and security considerations

Also update README:
- Add Documentation section with all guides
- Link to Electron packaging guide in installation section
- Clarify development vs distribution setup

This ensures Beekeeper Studio and other Electron apps can properly
bundle libssh for distribution without requiring end users to install
it separately.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: rathboma

README.md

@@ -43,6 +43,8 @@ npm install libssh-node
 
 ### For Electron
 
+#### Development
+
 Rebuild for your Electron version:
 
 ```bash
@@ -51,6 +53,14 @@ yarn rebuild --runtime=electron --target=31.0.0
 npm run rebuild -- --runtime=electron --target=31.0.0
 ```
 
+#### Distribution
+
+When packaging your Electron app for distribution, you need to bundle libssh with your application. See the complete guide:
+
+📦 **[Electron Packaging Guide](docs/electron-packaging.md)** - How to bundle libssh with your Electron app
+
+This ensures end users don't need to install libssh separately.
+
 ## Quick Start
 
 ### Basic Connection with Password
@@ -203,9 +213,18 @@ console.log(config.hostname, config.port, config.user);
 - `parse(configPath?: string): SSHConfigHost[]` - Parse SSH config file
 - `findHostConfig(hostname: string, configPath?: string): SSHConfigHost | null` - Find host config
 
-## Examples
+## Documentation
+
+### Guides
+
+- **[Tunneling Guide](docs/tunneling.md)** - Complete guide to SSH tunneling for database connections
+- **[SSH Agents Guide](docs/agents.md)** - Setting up 1Password, YubiKey, and system SSH agents
+- **[Building Guide](docs/building.md)** - Platform-specific build instructions
+- **[Electron Packaging Guide](docs/electron-packaging.md)** - Bundle libssh with your Electron app
+
+### Examples
 
-See the [examples/](examples/) directory for more examples:
+See the [examples/](examples/) directory for code examples:
 
 - [basic-connection.ts](examples/basic-connection.ts) - Simple connection
 - [ssh-tunnel.ts](examples/ssh-tunnel.ts) - Database tunnel setup