[NEVER MERGE] Update the plugin for the tutorial

[alcuadrado]

I think the plugin is mostly ready for the tutorial, except for its readme.

NOTE: THIS PR SHOULD NEVER BE MERGED, ONLY HERE FOR REVIEWS

[Copilot]

Pull Request Overview

This PR transforms the Hardhat plugin from a simple greeting system to an account management plugin. The plugin now provides functionality to access specific accounts from the available accounts list based on a configurable index.

• Replaces the greeting configuration with network-level account index configuration
• Updates tasks to print account information instead of greetings
• Implements network hooks to populate account information on connections

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
packages/plugin/test/example-tests.ts	Comments out all existing tests
packages/plugin/test/config.ts	Comments out all existing configuration tests
packages/plugin/src/types.ts	Removes greeting-related type definitions
packages/plugin/src/type-extensions.ts	Replaces greeting config with account index config for network types
packages/plugin/src/tasks/my-task.ts	Removes greeting task implementation
packages/plugin/src/tasks/my-account.ts	Adds new task to display account information
packages/plugin/src/index.ts	Updates task registration from greeting to account display
packages/plugin/src/hooks/network.ts	Implements account selection logic in network connection hook
packages/plugin/src/config.ts	Replaces greeting validation/resolution with account index logic
packages/example-project/hardhat.config.ts	Updates config to use account index instead of greeting

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[Copilot]

The plugin name 'hardhat-plugin-template' is hardcoded and duplicated. Consider extracting this to a constant or importing from package.json to maintain consistency across the codebase.

[Copilot]

Pull Request Overview

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

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