[Feature]: Define module_id_to_filename Via Configuration

[dtothefp]

What problem does this feature solve?

We are building Rspack apps in CI in non deterministic tmp directories, something like tmp/<unique_hash/app and therefore the variable names being defined (I believe by module_id_to_filename for imported modules is changing per build which breaks caching. Ideally we could define the variable naming structure via configuration with a function or a string template.

example of issue:

var _private_var_folders_8f_jdj3yc313y5fkz6ms6866tqw0000gp_T_tmp_16642tEeuhJvQGtV0_rspack_archive_preact_static_1_1_compat_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(preact_static_1_1_compat_js__WEBPACK_IMPORTED_MODULE_0__);

I was looking through the source code and saw FetchCompileAsyncWasmPlugin but I don't think that hooks into the variable naming?

What does the proposed API of configuration look like?

Ideally we could define this via a plugin or rspack.config.js

// rspack.config.js

module.exports = {
  experiments: {
     rspackFuture: { 
       bundlerVarNaming: // function or template string
    },
  },
}

or a plugin that allows for custom var naming for __webpack_require__