Improve sdcard partitioning process

-Improve code for partitioning sdcards
-Allow user to select a device for partitioning (must be removable)
-Use sgdisk to partition sdcards
-Set default sizes for ext and swap to 0
-Change increments for ext to 256MB and swap to 64MB

Note: sgdisk is included in 6.0. I have included a static prebuilt
sgdisk for trees that do not have sgdisk, however the prebuilt
sgdisk is a decent bit larger than the old parted binary. The old
parted binary is quite old at this point and we only have it for
armv7a. sgdisk should be maintained by AOSP and can be built from
source so it should work across architectures.

Change-Id: Ib80882d9b5776e5e9358b11340fba392e6f1ae09
diff --git a/twrp-functions.hpp b/twrp-functions.hpp
index d49cd84..d72c916 100644
--- a/twrp-functions.hpp
+++ b/twrp-functions.hpp
@@ -85,6 +85,7 @@
 	static std::string to_string(unsigned long value); //convert ul to string
 	static void SetPerformanceMode(bool mode); // support recovery.perf.mode
 	static void Disable_Stock_Recovery_Replace(); // Disable stock ROMs from replacing TWRP with stock recovery
+	static unsigned long long IOCTL_Get_Block_Size(const char* block_device);
 	static void Copy_Log(string Source, string Destination);