feat: improve alias options

[ivodolenc]

Type of Change

• New feature

Request Description

Improves alias detection and updates tests accordingly.

Now the parser scans all the keys and values from the alias object and if they match the current argument, they will be specified in the final array.

Previously, only keys from object alias were scanned.

Alias Options

$ --c value --e

const args = createArgs({
  alias: {
    a: ['b', 'c'], 
    d: ['e', 'f'], 
  },
})

/* Output:
{
    _: [],
    a: 'value',
    b: 'value',
    c: 'value',
    d: true,
    e: true,
    f: true,
}
*/