Add support for sourcing the generated script by not running `initialize` and `run`#596

*Discussed in https://github.com/DannyBen/bashly/discussions/594* ### Proposed Solution Change this: https://github.com/DannyBen/bashly/blob/2073e837f028f9139e63d44ee485a015a66003ed/lib/bashly/views/command/master_script.gtx#L15-L18 to this: ```bash if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then initialize run "$@" fi ``` and add this: ```yaml enable_sourcing: development ``` to this: https://github.com/DannyBen/bashly/blob/2073e837f028f9139e63d44ee485a015a66003ed/lib/bashly/libraries/settings/settings.yml#L101-L112