Added TMC5160 support (#725)

TMC5160: Added TMC5160 support

* Added example code for tmc5160 and smoke test
* Update go.mod
* Updated mod file
* Cleaned up commented out code and updated readme.
* ran go fmt
* Fixed setrampspeed func
* Removed spi1 pin setup in example.go. Renamed SPIComm to spicomm.go
* Removed unused test file
* Removed commented line

tmc5160/utils.go

@@ -0,0 +1,13 @@
+package tmc5160
+
+func ToHex(value uint32) string {
+	hexChars := "0123456789ABCDEF"
+	result := ""
+
+	for i := 0; i < 8; i++ { // 8 nibbles for a 32-bit number
+		nibble := (value >> (28 - i*4)) & 0xF
+		result += string(hexChars[nibble])
+	}
+
+	return "0x" + result
+}