Replace build scripts with CMake

Rebuilding everything each time was getting a bit slow.

tests/CMakeLists.txt

@@ -0,0 +1,24 @@
+add_library(testing testing.c)
+set_default_target_options(testing)
+target_include_directories(testing PUBLIC include)
+
+function(add_test_suite source)
+  string(REGEX REPLACE ".c$" "" name ${source})
+  add_executable(${name} ${source})
+  set_default_target_options(${name})
+  target_link_libraries(${name} PRIVATE lib testing)
+  add_test(NAME ${name} COMMAND ${name})
+endfunction()
+
+function(add_test_suites)
+  foreach(source ${ARGN})
+	add_test_suite(${source})
+  endforeach()
+endfunction()
+
+add_test_suites(
+  construct_tests.c
+  desugar_tests.c
+  fsa_tests.c
+  parse_tests.c
+)