Resolve command option values

[ghost]

String tasks do not have their options resolved properly when the options are defined in the command itself.
Global options are resolved properly as described here: https://github.com/php-taskman/core#define-global-command-options

I don't know if what I'm doing in the PR is really the proper way. Could you maybe point me in the right direction @drupol ?

Working example:

globals:
    options:
        env:
            description: Environment
            default: dev

commands:
    test:command:
        tasks:
            - echo "Running on environment ${options.env}"

Result:

 [Exec] Running echo "Running on environment dev"
Running on environment dev
 [Exec] Done in 0.002s

Non working example:

commands:
    test:command:
        tasks:
            - echo "Running on environment ${options.env}"
        options:
            env:
                description: Environment
                default: dev

Result:

 [Exec] Running echo "Running on environment ${options.env}"
sh: 1: Bad substitution
 [Exec]  Exit code 2  Time 0.002s

Also when defining both global and command option in the same yaml file you get an error:
An option named "env" already exists.