monocart-reporter merge CLI with TS config files

Description

This is a demo project to support [Feature Request] Accept a Typescript file as configuration for the Merge CLI for monocart-reporter #145.

It contains:

• a minimalist Playwright setup created using: npm init playwright@latest as per Playwright docs.
• added monocart-reporter to the Playwright reporters.
• the configuration for the monocart-reporter is in the playwright.monocart-reporter-options.ts file and is shared between the Playwright configuration file, playwright.config.ts, and the monocart-reporter merge CLI configuration file, playwright.monocart-reporter-merge.ts.

NPM scripts

• npm run test: runs all the Playwright tests.
• npm run first-shard: runs the first shard of Playwright tests. It uses --shard 1/2 with Playwright test. After running the tests it copies the result from the monocart-reporter into the ./shards/1 folder.
• npm run second-shard: runs the second shard of Playwright tests. It uses --shard 2/2 with Playwright test. After running the tests it copies the result from the monocart-reporter into the ./shards/2 folder.
• npm run all-shards: runs the first and second shards. In the end the monocart-reporter form each of the sharded runs will be in the ./shards folder.
• npm run merge-cli: uses the monocart-reporter merge CLI to merge the results from the Playwright test sharded runs. It merges the reports from ./shards/1 and ./shards/2 folders.

How to test using a TS file for the monocart-reporter merge CLI

1. Clone the repo.
2. Run npm install from the root of the repo.
3. Run npx playwright install if needed to install Playwright browsers.
4. Run npm run all-shards to created sharded reports in the ./shards folder.
5. Run npm run merge-cli to run the monocart-reporter merge CLI using a TS config file, the playwright.monocart-reporter-merge.ts.
6. As it stands you should get an error saying:

[MR] ERROR: failed to load config "./playwright.monocart-reporter-merge.ts": Cannot find package 'playwright.monocart-reporter-options' imported from Z:\repos\temp\monocart-merge-cli-demo\playwright.monocart-reporter-merge.ts

Other notes

• the playwright.monocart-reporter-merge.ts file contains a block of commented out code. If you uncomment that block and comment the code above then the npm run merge-cli works fine. Meaning the merge-cli will successfully use that TS file. This is just to further show that the problem seems to be with importing from other files in the project.
• this repo contains a tsconfig.json that mimics the one used in my real Angular project.
• the package.json contains "typescript": "~4.3.5" which is also the version of Typescript that is supported on the Angular project where I'm trying to use the monocart-reporter merge CLI. I'm mentioning this because the current support for TS files in the monocart-reporter merge CLI is using Amaro which in their README says: The supported TypeScript version is 5.5.4..