chore: add initial Taskfile

[PCritchfield]

Hey, I just made a Pull Request!

Description

This pull request introduces a new Taskfile.yml to manage various development tasks using the backstage-cli package. The file includes definitions for tasks such as starting the development server, building the plugin, running lint checks, testing, and more.

Key changes:

• Added a Taskfile.yml with version '3' and defined several variables and tasks for development operations.

Tasks included:

• start: Starts the development server using backstage-cli.
• build: Builds the plugin for distribution using backstage-cli.
• lint and lint:all: Runs ESLint checks and all linting/formatting checks respectively.
• test: Runs the test suite using backstage-cli.
• clean: Cleans build artifacts using backstage-cli.
• Additional tasks for code formatting, TypeScript compilation, and setting up git hooks.

Related Issue

Checklist

• Code is formatted with prettier
• Code is linted with eslint
• Tests have been added or updated
• Documentation has been updated (if applicable)

Additional Notes