Allow dynamic theming and improve ruby parser

src/main.cc

@@ -2,6 +2,7 @@
 #include "editor/editor.h"
 #include "io/sysio.h"
 #include "lsp/lsp.h"
+#include "syntax/decl.h"
 #include "ui/bar.h"
 #include "utils/utils.h"
 
@@ -61,6 +62,8 @@ int main(int argc, char *argv[]) {
 
   system(("bash " + get_exe_dir() + "/../scripts/init.sh").c_str());
 
+  load_theme(get_exe_dir() + "/../themes/default.json");
+
   Editor *editor = new_editor(filename, {0, 0}, {screen.row - 2, screen.col});
   Bar bar(screen);