Implement support for import and export directives in the symbols table

src/encoder/symbols.c

@@ -66,10 +66,13 @@ error_t *symbol_table_get_node_info(ast_node_t *node, symbol_kind_t *kind,
         *name = node->token_entry->token.value;
         return nullptr;
     case NODE_IMPORT_DIRECTIVE:
-        assert(false && "not implemented");
+        *kind = SYMBOL_IMPORT;
+        *name = node->children[1]->token_entry->token.value;
+        return nullptr;
     case NODE_EXPORT_DIRECTIVE:
-        assert(false && "not implemented");
-    // TODO: when .import and .export directives are created add them here
+        *kind = SYMBOL_EXPORT;
+        *name = node->children[1]->token_entry->token.value;
+        return nullptr;
     default:
         return err_symbol_table_invalid_node;
     }