update cmake build config

Signed-off-by: Avinal Kumar <avinal.xlvii@gmail.com>

otpgen/CMakeLists.txt

@@ -0,0 +1,39 @@
+# rename your project
+project(otpgen C CXX)
+
+
+# Initialize the SDK
+pico_sdk_init() 
+
+
+# Add your source files
+add_executable(${PROJECT_NAME}
+    main.cpp
+    topt.cpp
+    sha1.cpp
+)
+
+# set pico specific options
+pico_set_program_name(${PROJECT_NAME} "${PROJECT_NAME}")
+pico_set_program_version(${PROJECT_NAME} "0.1")
+
+pico_enable_stdio_uart(${PROJECT_NAME} 0)
+pico_enable_stdio_usb(${PROJECT_NAME} 0)
+
+
+# Don't forget to link the libraries you need!
+target_link_libraries(${PROJECT_NAME}
+    pico_stdlib
+    hardware_spi
+    badger2040
+)
+
+
+# create map/bin/hex file etc.
+pico_enable_stdio_usb(${PROJECT_NAME} 1)
+pico_add_extra_outputs(${PROJECT_NAME})
+
+# include source directories if needed
+include_directories(../pimoroni-pico )
+
+