meta: replace cmake mono-build system with a custom build co-ordinator

every system component now has its own self-contained build system, and a
seed file describing the component and its build system and dependencies.

a new tool, meadow, collects and uses these seed files to build the
components into a full system. meadow also manages the target system root
and a host prefix where toolchain tools are installed to.

the build system has also been updated to use a new $ARCH-rosetta-gcc
compiler, and the patches files necessary to build it have been
added to toolchain/cross-compiler.

services/herdd/CMakeLists.txt

@@ -1,13 +1,11 @@
+cmake_minimum_required(VERSION 3.31)
+project(herdd C)
+
 file(GLOB sources *.c)
 add_executable(herdd ${sources})
 target_link_libraries(herdd
-	libc libc-runtime
-	libmagenta libpthread liblaunch librosetta
+	c -l:crt0.o
+	magenta pthread launch rosetta
 	fx.runtime fx.collections fx.serial)
 
-sysroot_add_program(
-	NAME herdd
-	BIN_DIR /usr/bin)
-bsp_add_program(
-	NAME herdd
-	BIN_DIR /usr/bin)
+install(TARGETS herdd)