[seisman]

See #4898 for context.

This PR implements a common function _parse_series to improve the -T option in histogram.

Now it's possible to use series=np.arange(0, 10, 1), which is more familiar to Python users.

Example

import numpy as np
import pygmt

rng = np.random.default_rng(seed=100)
data = rng.normal(loc=100, scale=25, size=521)
fig = pygmt.Figure()
fig.histogram(
    data=data,
    frame=True,
    # series=5,
    # series=[0, 200, 5],
    series=np.arange(0, 200, 5),
    fill="red3",
    pen="1p",
)
fig.show()

Related to #4251.