python additions (#686)

* python: fixed versions when no receiver, added clearbusy, serialnumber and readoutspeedlist. commandline: modified versions to look like python versions

* python: added clkphase, fixed clkdiv, maxphase

* python added adcvpp

* gaincaps for python

---------

Co-authored-by: Erik Frojdh <erik.frojdh@gmail.com>

python/tests/test_m3gaincaps.py

@@ -0,0 +1,24 @@
+import pytest
+
+from slsdet import Mythen3GainCapsWrapper
+from slsdet.enums import M3_GainCaps #this is the c++ enum
+
+
+def test_comapre_with_int():
+    c = Mythen3GainCapsWrapper(128) #C10pre
+    assert c == 128
+    assert c != 5
+    assert c != 1280
+
+def test_compare_with_other():
+    a = Mythen3GainCapsWrapper(128)
+    b = Mythen3GainCapsWrapper(1<<10)
+    c = Mythen3GainCapsWrapper(128)
+    assert a!=b
+    assert (a==b) == False
+    assert a==c
+
+def test_can_be_default_constructed():
+    c = Mythen3GainCapsWrapper() 
+    assert c == 0
+