Github Actions for multi projects for same solution

How does one go about triggering different workflows based on which branches the code changes are from?

i.e. consider the following:

MyCoolPackages.sln
  |__ PackageOne.csproj
  |__ PackageTwo.csproj

So my current workflow is set to build PackageOne every time there is a PR for main/develop branches. But lets say I've added a new feature to PackageTwo and only want that project to build and release. Can find examples for this type of GA. What are the approaches here? Have a generic workflow and pass in the solution name? But how to go about doing that based on code changes?

I managed to strap together a solution here => https://github.com/Syed-RI/the_bruno_project

name: Miracle

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

env:
  PROJECT_NAME: "Bruno"

jobs:
  Encanto:
    runs-on: ubuntu-latest
    steps:

      - id: checkout
        name: Checkout
        uses: actions/checkout@v2

      - id: detect_changes
        name: Detect Changes
        uses: zattoo/recognition@v2
        with:
          Domains: '{"Bruno": ["Bruno"], "Julieta": ["Julieta"], "Pepa": ["Pepa"]}' # name : path
          token: ${{github.token}}

      - id: read_projects
        name: Read Projects
        uses: Stockopedia/action-run-on-list@v1
        with:
          list: ${{ steps.detect_changes.outputs.projects }}
          command: |
            echo "detected changes in $item" 
            # doing >> $GITHUB_ENV doesn't work here ☹️
            # if more than one project level change is detected, the output will be the last one here 😬
            echo "::set-output name=output1::$item" 

      - id: update_variables
        name: Update Variables
        run: echo PROJECT_NAME=${{ steps.read_projects.outputs.output1 }} >> $GITHUB_ENV

      - id: eval_project_name
        name: Evaluate Project Name
        run: |
          # echo ${{steps.read_projects.outputs.output1}}
          echo $PROJECT_NAME

      - id: setup_dotnet
        name: Setup .NET
        uses: actions/setup-dotnet@v2
        with:
          dotnet-version: 6.0.x

      - id: restore_dependencies
        name: Restore dependencies
        run: dotnet restore "$PROJECT_NAME/$PROJECT_NAME.csproj"

      - id: build_project
        name: Build
        run: dotnet build "$PROJECT_NAME/$PROJECT_NAME.csproj" --no-restore