Implement public import parsing and add test case

v0/parser.c

@@ -56,6 +56,12 @@ Module* parser_parse(TokenStream* ts) {
 		module->imports = new_imports;
 
 		t = tokenstream_next(ts);
+		bool is_public = false;
+		if (t.token == TOKEN_IDENTIFIER && strncmp(t.text.data, "public", t.text.length) == 0) {
+			is_public = true;
+			t = tokenstream_next(ts);
+		}
+
 		if (t.token != TOKEN_IDENTIFIER) {
 			log_on_line(&t.location, t.location.column_end, "expected module name to import");
 			parser_free(module);
@@ -69,6 +75,7 @@ Module* parser_parse(TokenStream* ts) {
 		}
 		memcpy(module->imports[module->import_count].module_name, t.text.data, t.text.length);
 		module->imports[module->import_count].module_name[t.text.length] = '\0';
+		module->imports[module->import_count].is_public = is_public;
 		module->import_count++;
 
 		t = tokenstream_next(ts);