fix(turf-random): BREAKING: standardize randomPolygon and randomLineString options to camelCase

[faizanjafar]

Renames num_vertices -> numVertices, max_radial_length -> maxRadialLength in randomPolygon, and num_vertices -> numVertices, max_length -> maxLength, max_rotation -> maxRotation in randomLineString, to match the camelCase convention used across the rest of the library.

Fixes #3110

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[mfedderly]

Thank you!