[feature] admit parentheses in version spec.

[rotu]

Is your feature request related to a problem? Please describe.

Operator ranges are ambiguous. E.g.

> proto pin npm '>10, <11 || >11, <12'

│ SUCCESS
│ Pinned npm version >11, <12 || >10, <11 to config D:\SonarView\.prototools

It's not clear if the input was parsed as (>11 AND <12) OR (>10 AND <11) versus (>11) AND (<12 OR >10) AND (<11).

Describe the solution you'd like

Add (and admit as input) parentheses for grouping. e.g.:

Pinned npm version (>11, <12) || (>10, <11) to config D:\SonarView\.prototools

Describe alternatives you've considered

Normalize every version specifier expression to a union of intervals.

Additional context