start work on 320x240 screen version using the pi pico

pico_decoder/CMakeLists.txt

@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.13...3.27)
+
+# initialize the SDK based on PICO_SDK_PATH
+# note: this must happen before project()
+include(pico_sdk_import.cmake)
+
+project(Bad_Apple!!_Pico)
+
+# initialize the Raspberry Pi Pico SDK
+pico_sdk_init()
+
+# rest of your project
+add_executable(bad_apple_pico
+    src/main.c
+)
+
+# Add pico_stdlib library which aggregates commonly used features
+target_link_libraries(bad_apple_pico
+    pico_stdlib
+    hardware_spi
+)
+
+
+# create map/bin/hex/uf2 file in addition to ELF.
+pico_add_extra_outputs(bad_apple_pico)