support/testing: add python-bitstring tests

Add a simple test case to check the basic usage by checking the
corresponding representation of a 12-bit decimal number in hex, binary
and integer.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

support/testing/tests/package/sample_python_bitstring.py

@@ -0,0 +1,6 @@
+import bitstring
+
+value = bitstring.BitArray("uint:12=42")
+assert(value.hex == "02a")
+assert(value.bin == "000000101010")
+assert(value.uint == 42)