Add partcodes.py to src/live

partcodes.py is used for mapping GPT partition UIIDs to hexcode/decimal
values.

OpenGnsys stores partition types in the database using the decimal
value of this hexcode. The hexcode used for GPT partition UUID is the
same as defined internally in gdisk [1].

[1]
https://sourceforge.net/p/gptfdisk/code/ci/master/tree/parttypes.cc#l75

src/live/partcodes.py

@@ -0,0 +1,25 @@
+"""
+Module containing a GUID_MAP, mapping GPT UUID to a hexcode (inspired in gdisk)
+"""
+
+# Maps GUID to hex code.
+# See https://sourceforge.net/p/gptfdisk/code/ci/master/tree/parttypes.cc#l75
+GUID_MAP = {
+    # Windows
+    'EBD0A0A2-B9E5-4433-87C0-68B6B72699C7': 0x0700,  # Microsoft basic data (NTFS)
+    'E3C9E316-0B5C-4DB8-817D-F92DF00215AE': 0x0C01,  # Microsoft reserved
+    'DE94BBA4-06D1-4D40-A16A-BFD50179D6AC': 0x2700,  # Windows recovery
+
+    # EFI and boot related
+    'C12A7328-F81F-11D2-BA4B-00A0C93EC93B': 0xEF00,  # EFI System Partition
+    '21686148-6449-6E6F-744E-656564454649': 0xEF02,  # BIOS boot partition (grub)
+
+    # Linux
+    '0657FD6D-A4AB-43C4-84E5-0933C84B4F4F': 0x8200,  # Linux swap
+    '0FC63DAF-8483-4772-8E79-3D69D8477DE4': 0x8300,  # Linux filesystem
+    'E6D6D379-F507-44C2-A23C-238F2A3DF928': 0x8E00,  # Linux LVM
+
+    # Apple
+    '426F6F74-0000-11AA-AA11-00306543ECAC': 0xAB00,  # Recovery HD
+    '48465300-0000-11AA-AA11-00306543ECAC': 0xAF00,  # HFS/HFS+
+}