modules: add ability to clear cache (#2300)

This adds the ability to remove a single module from the cache, or to
clear the entire module cache.

JerryScript-DCO-1.0-Signed-off-by: Gabriel Schulhof gabriel.schulhof@intel.com

jerry-ext/include/jerryscript-ext/module.h

@@ -134,6 +134,13 @@ jerry_value_t jerryx_module_resolve (const jerry_value_t name,
                                      const jerryx_module_resolver_t **resolvers,
                                      size_t count);
 
+/**
+ * Delete a module from the cache or, if name has the JavaScript value of undefined, clear the entire cache.
+ */
+void jerryx_module_clear_cache (const jerry_value_t name,
+                                const jerryx_module_resolver_t **resolvers,
+                                size_t count);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */