Resolve "Dependency pyplnoise is no longer available"

Closes #99 (closed)

• Remove pyplnoise as a dependecy
• Add pyplnoise as a submodule

lisainstrument/noises.py

@@ -11,11 +11,12 @@ Authors:
 
 import logging
 import numpy as np
-from .dependencies import pyplnoise
 
 from numpy import pi, sqrt
 from lisaconstants import c
 
+from .dependencies import pyplnoise
+
 logger = logging.getLogger(__name__)