chore: migrate many things to use cmake instead

cmake/Xxd.cmake

@@ -0,0 +1,10 @@
+find_program(BASH_EXECUTABLE bash REQUIRED)
+find_program(_XXD xxd REQUIRED)
+find_program(_JQ jq REQUIRED)
+find_program(_XZ xz REQUIRED)
+
+execute_process(
+    COMMAND "${BASH_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/xxd.sh"
+    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+    COMMAND_ERROR_IS_FATAL ANY
+)