Specifying a float for trajectory t does not work

Summary

Specifying a float for the t parameter of a trajectory leads to an index error.

Steps to reproduce

with np 1.23.1 (might not happen with older versions, I am not sure)

from timor.utilities.trajectory import Trajectory
import numpy as np
q = np.random.rand(100)
t = .1
traj = Trajectory(t, q)


    if self.is_timed and self.q.shape[0] != self.t.shape[0]:
IndexError: tuple index out of range

What is the current bug behavior?

Float t is cast to array where t.shape ==> (), so indexing the shape of t automatically leads to this error.

What is the expected correct behavior? // Possible Fix

Probably t should be cast to an array with shape (1,) instead.

/cc @ga59peh