chore: added example binary showcasing simple html conversion

example/basic.c

@@ -0,0 +1,26 @@
+#include <assert.h>
+#include <stdio.h>
+
+#include "mrk/lexer.h"
+#include "mrk/parser.h"
+#include "mrk/ast.h"
+
+int main() {
+  const char *buf = "# this is a header\n\nthis is a paragraph with a [link](https://example.com)";
+
+  mrk_lexer *lexer;
+  assert(mrk_lexer_init(&lexer) == mrk_err_ok);
+  mrk_lexer_open(lexer, buf, 0);
+
+  mrk_parser *parser;
+  assert(mrk_parser_init(&parser) == mrk_err_ok);
+  mrk_parser_open(parser, lexer);
+
+  mrk_ast_node *root;
+  assert(mrk_parser_parse(&root, parser) == mrk_err_ok);
+
+  char *html;
+  assert(mrk_ast_to_html(&html, buf, root) == mrk_err_ok);
+
+  printf("%s\n", html);
+}