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/bshell-test/CMakeLists.txt

@@ -1,17 +1,9 @@
-rosetta_add_misc_service(
-	NAME bshell-test
-	CFG_FILE ${CMAKE_CURRENT_SOURCE_DIR}/bshell-test.service)
+cmake_minimum_required(VERSION 3.31)
+project(bshell-test)
 
-rosetta_service_add_file(
-	NAME bshell-test
-	SRC_FILE ${CMAKE_CURRENT_SOURCE_DIR}/test.bshell
-	DEST_DIR /sbin)
-
-sysroot_add_service(
-	NAME bshell-test
-	BIN_DIR /usr/bin
-	SVC_DIR /etc/herdd/services)
-bsp_add_service(
-	NAME bshell-test
-	BIN_DIR /usr/bin
-	SVC_DIR /etc/herdd/services)
+install(
+	FILES ${CMAKE_CURRENT_SOURCE_DIR}/bshell-test.service
+	DESTINATION etc/herdd/services)
+install(
+	FILES ${CMAKE_CURRENT_SOURCE_DIR}/test.bshell
+	DESTINATION sbin)