I’m not aware of such specific Julia package, but GMT.jl would be the first place to look at, as it provides both Schmidt and Wulff projections.
If needed, the data processing could be done in Julia and the display could call a stereonet package in Python:
# In Windows Powershell do: pip install mplstereonet
using PyCall
using PyPlot
mplstereonet = pyimport("mplstereonet")
fig = plt.figure()
ax = fig.add_subplot(111, projection="stereonet")
strike, dip = 315, 30
ax.plane(strike, dip, "g-", linewidth=2)
ax.pole(strike, dip, "g^", markersize=18)
ax.rake(strike, dip, -25)
ax.grid()
plt.show()
