bshell: re-organise build into three separate components

bshell: the front-end binary
bshell.runtime: contains the parser, compiler, and classes needed to run bshell scripts
bshell.core: contains the builtin commandlets and aliases

bshell.core/CMakeLists.txt

@@ -0,0 +1,20 @@
+set(source_dirs aliases cmdlets)
+
+file(GLOB sources
+	*.c
+	*.h)
+
+foreach (d ${source_dirs})
+	file(GLOB d_sources
+		${d}/*.c
+		${d}/*.h)
+	set(sources ${sources} ${d_sources})
+endforeach (d)
+
+message(STATUS ${sources})
+add_library(bshell.core SHARED ${sources})
+
+target_link_libraries(bshell.core bshell.runtime FX::Runtime FX::Collections FX::Term)
+target_include_directories(bshell.core PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include)
+target_compile_definitions(bshell.core PUBLIC
+	BSHELL_VERSION="${bshell_version}")