Implemented php runtime functions into extension

https://git.n64.cc/nosial/ncc/-/issues/33

src/installer/extension

@@ -1,8 +1,15 @@
 <?php
 
-    if(defined('NCC_INIT') == false)
+    use ncc\Abstracts\Versions;
+    use ncc\Exceptions\ConstantReadonlyException;
+    use ncc\Exceptions\ImportException;
+    use ncc\Exceptions\InvalidConstantNameException;
+    use ncc\ncc;
+    use ncc\Runtime;
+
+    if(!defined('NCC_INIT'))
     {
-        if(file_exists('%ncc_install' . DIRECTORY_SEPARATOR . 'autoload.php') == false)
+        if(!file_exists('%ncc_install' . DIRECTORY_SEPARATOR . 'autoload.php'))
         {
             throw new RuntimeException('Cannot locate file \'%ncc_install' . DIRECTORY_SEPARATOR . 'autoload.php\'');
         }
@@ -10,4 +17,99 @@
         {
             require('%ncc_install' . DIRECTORY_SEPARATOR . 'autoload.php');
         }
+
+
+        if(!function_exists('import'))
+        {
+            /**
+             * Attempts to import a package into the current runtime
+             *
+             * @param string $package
+             * @param string $version
+             * @param array $options
+             * @return void
+             * @throws ImportException
+             */
+            function import(string $package, string $version= Versions::Latest, array $options=[]): void
+            {
+                Runtime::import($package, $version, $options);
+            }
+        }
+
+        if(!function_exists('get_imported'))
+        {
+            /**
+             * Returns an array of all imported packages
+             *
+             * @return array
+             */
+            function get_imported(): array
+            {
+                return Runtime::getImportedPackages();
+            }
+        }
+
+        if(!function_exists('ncc_constants'))
+        {
+            /**
+             * Returns an array of constants defined by NCC
+             *
+             * @return array
+             * @throws \ncc\Exceptions\RuntimeException
+             */
+            function ncc_constants(): array
+            {
+                return ncc::getConstants();
+            }
+        }
+
+        if(!function_exists('consts_get'))
+        {
+            /**
+             * Returns the value of a constant defined in NCC's runtime environment
+             *
+             * @param string $package
+             * @param string $name
+             * @return string|null
+             */
+            function consts_get(string $package, string $name): ?string
+            {
+                return Runtime\Constants::get($package, $name);
+            }
+        }
+
+        if(!function_exists('consts_set'))
+        {
+            /**
+             * Sets the value of a constant defined in NCC's runtime environment
+             *
+             * @param string $package
+             * @param string $name
+             * @param string $value
+             * @param bool $readonly
+             * @return void
+             * @throws ConstantReadonlyException
+             * @throws InvalidConstantNameException
+             */
+            function consts_set(string $package, string $name, string $value, bool $readonly=false): void
+            {
+                Runtime\Constants::register($package, $name, $value, $readonly);
+            }
+        }
+
+        if(!function_exists('consts_delete'))
+        {
+            /**
+             * Deletes a constant defined in NCC's runtime environment
+             *
+             * @param string $package
+             * @param string $name
+             * @return void
+             * @throws ConstantReadonlyException
+             */
+            function consts_delete(string $package, string $name): void
+            {
+                Runtime\Constants::delete($package, $name);
+            }
+        }
     }