added taskdef.json for mediator #16

	name: Continuous Integration

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	validate:
	name: Validate
	runs-on: ubuntu-20.04

	steps:
	- name: Check the repository
	uses: actions/checkout@v2

	# Setup Node.js
	- name: Setup Node.js
	uses: actions/setup-node@v2
	with:
	node-version: 18.x
	cache: yarn

	# Installing the project dependencies
	- name: Install dependencies
	run: yarn install --frozen-lockfile

	# Validation
	- name: Running `yarn validate`
	run: yarn validate

	# Run the tests
	- name: Run tests with coverage
	run: yarn test --coverage

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