Add Formatter github action

[HarryWang0619]

Add julia formatter and format.yml to gh action.

[Copilot]

Pull Request Overview

This PR adds automated Julia code formatting to the repository by introducing a GitHub Action workflow and configuration file. The purpose is to ensure consistent code style across the codebase by automatically suggesting formatting changes on pull requests.

• Adds a JuliaFormatter configuration file with SciML style guidelines
• Creates a GitHub Action workflow that runs on pull request events to suggest formatting changes
• Configures the formatter to ignore Pluto and notebook files

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
JuliaFormatter.toml	Configuration file specifying SciML style formatting rules and file exclusions
.github/workflows/Format.yml	GitHub Action workflow for automated formatting suggestions on pull requests

Comments suppressed due to low confidence (1)

.github/workflows/Format.yml:10

• The version 'v4' for julia-actions/julia-format action may not exist. As of my knowledge cutoff in January 2025, this action was at v3. Please verify the correct version number exists in the marketplace.

      - uses: julia-actions/julia-format@v4