Create package for the forging helper plugin and setup default configs

[shuse2]

Description

• Create new package setup in framework-plugins/lisk-framework-forger-plugin similar to other plugins
• Package name should be @liskhq/lisk-framework-forger-plugin
• Add config for port, whitelist, webhook, event filter and data path (for database)
• Prepare database instance
• Add skeleton index with importing BasePlugin(BaseModule) from lisk-framework
• Export the plugin from lisk-sdk

Motivation

In order to implement the forging helper plugin, this initial setup is required.

Acceptance Criteria

• It should have source and test code setup
• It should have config setup

Additional Information

Related issues: #5215