feat: provide access to key segments from step

example/routing.c

@@ -0,0 +1,44 @@
+#include <unistd.h>
+
+#include "lnm/log.h"
+#include "lnm/loop.h"
+#include "lnm/http/loop.h"
+
+lnm_err ctx_init(void **c_ctx, void *gctx) {
+  *c_ctx = NULL;
+
+  return lnm_err_ok;
+}
+
+void ctx_reset(void *c_ctx) {}
+void ctx_free(void *c_ctx) {}
+
+lnm_http_step_err print_step(lnm_http_conn *conn) {
+  lnm_http_loop_ctx *ctx = conn->ctx;
+
+  const lnm_http_route_match_segment *seg = lnm_http_route_match_get(&ctx->match, "key");
+  lnm_linfo("main", "key: %.*s", seg->len, ctx->req.buf.s + ctx->req.path.o + seg->start);
+  return lnm_http_step_err_done;
+}
+
+int main() {
+  lnm_http_loop *hl;
+
+  lnm_http_loop_init(&hl, NULL, ctx_init,
+                     ctx_reset,
+                     ctx_free);
+
+  lnm_http_router *router;
+  lnm_http_router_init(&router);
+
+  lnm_http_route *route;
+  lnm_http_router_add(&route, router, lnm_http_method_get, "/:key");
+  lnm_http_route_step_append(route, print_step, false);
+
+  lnm_http_loop_router_set(hl, router);
+
+  lnm_log_init_global();
+  lnm_log_register_stdout(lnm_log_level_debug);
+
+  printf("res = %i\n", lnm_http_loop_run(hl, 8080, 1, 0));
+}