Clean up CI/CD workflows

.github/actions/install-parcels/action.yml

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+name: Setup Anaconda and install parcels
+description: > 
+  In-repo composite action to setup Anaconda and install parcels. Installation of parcels relies on
+  `setup.py` file being available in the root. For general setup of Anaconda environments, just use
+  the `conda-incubator/setup-miniconda` action (setting C variables as required)
+inputs:
+  environment-file:
+    description: "Anaconda environment file"
+    required: true
+  environment-name:
+    description: "Anaconda environment name"
+    required: true
+runs:
+  using: "composite"
+  steps:
+    - name: Configure pagefile # Windows compatability fix as per PR #1279
+      if: ${{ runner.os == 'Windows' }}
+      uses: al-cheb/configure-pagefile-action@v1.3
+      with:
+        minimum-size: 8GB
+    - name: Setup Miniconda
+      uses: conda-incubator/setup-miniconda@v2.2.0
+      with:
+        miniconda-version: "latest"
+        activate-environment: ${{ inputs.environment-name }} # Needs to be the same as listed in the env file
+        environment-file: ${{ inputs.environment-file }}
+        auto-activate-base: false
+        auto-update-conda: true
+    - run: conda info
+      shell: bash -el {0}
+    - name: Install parcels
+      run: python setup.py install
+      shell: bash -el {0}
+    - name: Set env variables for macos
+      run: |
+        if [[ "${{ runner.os }}" == macOS ]]; then
+          echo "Setting CONDA_BUILD_SYSROOT and C_INCLUDE_PATH for macos"
+          echo "CONDA_BUILD_SYSROOT=/" >> $GITHUB_ENV
+          echo "C_INCLUDE_PATH=$C_INCLUDE_PATH:/Applications/Xcode.app/Contents//Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/" >> $GITHUB_ENV
+          echo "CC=gcc" >> $GITHUB_ENV
+        else
+          echo "Platform not macos."
+        fi
+      shell: bash

.github/workflows/integration-tests.yml

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+name: integration-tests
+on:
+  push:
+    branches:
+      - "master"
+      - "test-me/*"
+  pull_request:
+    branches:
+      - "*"
+  schedule:
+    - cron: "0 7 * * 1" # Run every Monday at 7:00 UTC
+
+defaults:
+  run:
+    shell: bash -el {0}
+
+jobs:
+  integration-test:
+    if: github.event.pull_request.draft == false
+    name: ${{ matrix.os }} integration tests
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos, ubuntu, windows]
+        include:
+          - os: macos
+            os-short: osx
+          - os: ubuntu
+            os-short: linux
+          - os: windows
+            os-short: win
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Miniconda and parcels
+        uses: ./.github/actions/install-parcels
+        with:
+          environment-file: environment_py3_${{ matrix.os-short }}.yml
+          environment-name: py3_parcels
+      - name: Integration test
+        run: |
+          parcels_get_examples examples
+          pytest -v -s --nbval-lax -k "not documentation" --html="${{ matrix.os }}_integration_test_report.html" --self-contained-html examples
+      - name: Upload test results
+        if: ${{ always() }} # Always run this step, even if tests fail
+        uses: actions/upload-artifact@v3.1.2
+        with:
+          name: Integration test report
+          path: ${{ matrix.os }}_integration_test_report.html
+