Create demo application

demo/CMakeLists.txt

@@ -0,0 +1,5 @@
+add_executable(repl
+  main.c
+)
+configure_target(repl)
+target_link_libraries(repl PRIVATE imp)

demo/main.c

@@ -0,0 +1,9 @@
+#include "repl.h"
+
+static repl_t repl;
+
+int main(void)
+{
+	repl_init(&repl);
+	return repl_run(&repl);
+}