Allow configuring karma with TypeScript: karma.conf.ts

Is your feature request related to a problem? Please describe.

Allowing the developer to configure karma and be able to type check

Describe the solution you'd like

In the file lib/services/test-execution-service.ts the value for karma config is hardcoded on the line 326. Is it possible to discover the config file in the order similar to the one on the karma website: https://karma-runner.github.io/3.0/config/configuration-file.html ?

Describe alternatives you've considered

Additional context

Here is the location of the code discovering test file in the karma: https://github.com/karma-runner/karma/blob/master/lib/cli.js#L114..L129

阅读 lib/services/test-execution-service.ts 第 326 行附近的代码，并将其中硬编码的 Karma 配置选择与 lib/cli.js 第 114-129 行中的 Karma 发现逻辑进行比较。当 CLI 可以发现并使用 karma.conf.ts 配置，使开发者能够对其 Karma 配置进行类型检查时，即视为完成。