Add flag to include a Taskfile as un-namespaced #1271

# taskfiles/a/Taskfile.yaml
tasks:
  # ... 

# taskfiles/b/Taskfile.yaml
tasks:
  # ... 

# taskfiles/Taskfile.yaml
includes:
  a: ./a
  b: ./b
# ... 

# Taskfile.yaml in ANOTHER PROJECT
version: "3"

includes:
  remote:
    taskfile: .remote/taskfiles/Taskfile.yaml
    optional: true # Optional only until we have init'd 
    aliases: [r]

# Load our project specific variables from .env
dotenv: [.env]

vars:
  REMOTE_BRANCH: master
  REMOTE_LOCAL_PATH: ""

tasks:
  default:
    desc: Initializes the Taskfile setup for this project by downloading the remote Taskfile automation repo.
    silent: true
    aliases: [init]
    cmds:
      - |
        if [ -d .remote ]; then
          rm -rf .remote/
        fi

        mkdir -p .remote

        if [[ -z "${REMOTE_LOCAL_PATH}" ]]; then
          echo "Copying remote from local path..."
          rsync -rq --exclude=.git --exclude=**/.terraform {{.REMOTE_LOCAL_PATH}} .remote
        else
          echo "Downloading remote from remote repo..."
          git clone -b {{.REMOTE_BRANCH}} <remote repo URL> .remote
        fi

includes:
  remote:
    taskfile: .remote/taskfiles/Taskfile.yaml
    optional: true # Optional only until we have init'd 
    unnamespace: true