move extension_loaded to runtime-common (#1479)

Author: apolyakov

builtin-functions/kphp-light/stdlib/system-functions.txt

@@ -57,6 +57,8 @@ function escapeshellcmd($cmd ::: string): string;
 
 function exec($command ::: string, &$output ::: mixed = [], int &$result_code = TODO): string|false;
 
+function extension_loaded(string $extension): bool;
+
 // === UNSUPPORTED ===
 
 /** @kphp-extern-func-info stub generation-required */

runtime-common/stdlib/system/system-functions.h

@@ -9,3 +9,7 @@
 string f$escapeshellarg(const string& arg) noexcept;
 
 string f$escapeshellcmd(const string& cmd) noexcept;
+
+inline bool f$extension_loaded(const string& /*extension*/) noexcept {
+  return true;
+}

runtime/interface.cpp

@@ -2512,7 +2512,3 @@ int64_t f$numa_get_bound_node() {
   }
   return numa.get_worker_numa_node(logname_id);
 }
-
-bool f$extension_loaded(const string& /*extension*/) {
-  return true;
-}

runtime/interface.h

@@ -240,5 +240,3 @@ inline void f$kphp_extended_instance_cache_metrics_init(F&& callback) {
 }
 
 int64_t f$numa_get_bound_node();
-
-bool f$extension_loaded(const string& extension);