Add github action for compilation and coding style

.github/workflows/check-build.yaml

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+name: Configure and build
+
+on:
+
+  push:
+    branches:
+      - master
+      - develop
+
+  pull_request:
+    branches:
+      - master
+      - develop
+
+jobs:
+
+  style:
+
+    name: coding style
+    uses: ./.github/workflows/check-coding-style.yaml
+
+  build:
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]    #[ubuntu-latest, macos-latest]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+
+      - name: Install linux dependencies
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          sudo apt-get update -q
+          sudo apt-get install -qy gfortran gcc g++
+          sudo apt-get install -qy expect
+          sudo apt-get install -qy libmotif-dev
+
+      - name: Install macOS dependencies
+        if: matrix.os == 'macos-latest'
+        run: |
+          brew install gcc
+          brew install tcl-tk
+          brew install openmotif
+
+      - name: Compiler versions
+        run: |
+          gfortran --version
+          gcc  --version
+          g++ --version
+          make --version
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build EGSnrc
+        run: |
+          HEN_HOUSE/scripts/configure.expect ${{ runner.os }}.conf | tee configure.log
+          for f in HEN_HOUSE/log/*.log configure.log; do echo $f; cat $f; done
+          (! grep -i fail configure.log)

.github/workflows/check-coding-style.yaml

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+name: Coding style
+
+on:
+  workflow_call:
+
+jobs:
+
+  eol:
+    name: eol whitespace
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Check whitespace
+        run: |
+          for f in $(grep -ERl -I '\s+$' HEN_HOUSE | grep -v "^HEN_HOUSE/spectra/lnhb/ensdf"); do
+              echo $f;
+              sed -i -e's/[[:space:]]*$//' $f;
+          done
+          git diff
+          (! git status | grep "modified")
+
+  astyle:
+
+    name: astyle standard
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install astyle
+        run: |
+          wget https://sourceforge.net/projects/astyle/files/astyle/astyle%203.1/astyle_3.1_linux.tar.gz
+          tar -xzf astyle_3.1_linux.tar.gz
+          (cd astyle/build/gcc; make)
+
+      - name: Check astyle formatting standard
+        run: |
+          astyle/build/gcc/bin/astyle --options=HEN_HOUSE/scripts/egs_style_standard --recursive "HEN_HOUSE/egs++/*.cpp,*.h"
+          git diff
+          (! git status | grep ".orig")

.github/workflows/check-gcc-versions.yaml

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+name: Compiler versions
+
+on:
+  workflow_call:
+
+jobs:
+
+  gcc-versions:
+    name: gcc versions
+
+    strategy:
+      matrix:
+        gcc-version: [4.8, 5, 6, 7, 8, 9]
+        os: [ubuntu-18.04]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+
+      - name: Install dependencies
+        if: matrix.os == 'ubuntu-18.04'
+        run: |
+          sudo apt-get update -q
+          sudo apt remove -qy gcc g++
+          sudo apt install gfortran
+          sudo apt install gcc-${{ matrix.gcc-version }}
+          sudo apt install g++-${{ matrix.gcc-version }}
+          sudo apt-get install -qy expect
+          sudo apt-get install -qy libmotif-dev
+
+      - name: Compiler versions
+        run: |
+          gfortran --version
+          gcc  --version
+          g++ --version
+          make --version
+
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build EGSnrc
+        run: |
+          HEN_HOUSE/scripts/configure.expect ${{ runner.os }}.conf | tee configure.log
+          cat *.log log/*.log
+          (! grep -i fail *.log log/*.log)