Allow installation from source-requirements.yml

[KB-perByte]

Enable source installation capabilities, it depends on the .config/source-requirements.yml file to pick up dependencies to source install them.

Command example -

ade install ".[test]" --venv venv --cpi

Attribute added -
cpi/ collection-pre-install

Example source-requirements.yml

---
collections:
  - git+https://github.com/ansible-collections/ansible.utils.git
  - git+https://github.com/ansible-collections/ansible.netcommon.git

Log -

ansible_development_environment install .\[test\] --venv venv --cpi
    Note: Source installed collections include: ansible.netcommon and ansible.utils
    Note: Installed collections include: ansible.netcommon, ansible.utils, and cisco.ios
    Note: All python requirements are installed.
    Note: All required system packages are installed.
    Note: A virtual environment was specified but has not been activated.
    Note: Please activate the virtual environment:
          source venv/bin/activate

Force installing collections from source, automatically make ansible-galaxy skip installing dependencies.

Fixes: #79

[cidrblock]

@ssbarnea I'm fine with this one, I understand why it is needed.

ansible-galaxy is being used to install the collections in the new file, it just they need to be installed prior to the collection being developed being installed.