GitHub actions: compile driver on Ubuntu (#1)

Compile GDAL-GRASS driver including tests for GRASS GIS raster and vector maps.

.github/workflows/apt.txt

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+gdal-bin
+grass
+grass-dev
+libgdal-dev
+libpq-dev
+pkg-config

.github/workflows/build_ubuntu.sh

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+#!/usr/bin/env bash
+
+# fail on non-zero return code from a subprocess
+set -e
+
+# print commands
+set -x
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 GDAL_AUTOLOAD_DIR"
+    exit 1
+fi
+
+# non-existent variables as an errors
+set -u
+
+# versionless in future?
+GRASS=grass$(pkg-config --modversion grass | cut -d. -f1,2 | sed 's+\.++g')
+
+export GDAL_AUTOLOAD_DIR=$1
+
+./configure \
+    --prefix=/usr \
+    --with-autoload=${GDAL_AUTOLOAD_DIR} \
+    --with-grass=/usr/lib/${GRASS} \
+    --with-postgres-includes=$(pg_config --includedir)
+
+make
+make install

.github/workflows/test_simple.sh

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+#!/usr/bin/env bash
+
+# fail on non-zero return code from a subprocess
+set -e
+
+# print commands
+set -x
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 GDAL_AUTOLOAD_DIR"
+    exit 1
+fi
+
+# non-existent variables as an errors
+set -u
+
+export GDAL_AUTOLOAD_DIR=$1
+export GDAL_DRIVER_PATH=${GDAL_AUTOLOAD_DIR}
+
+# add small GRASS GIS dataset for tests
+(mkdir -p $HOME/grassdata && \
+ cd $HOME/grassdata/ && \
+ wget -c --quiet https://grass.osgeo.org/sampledata/north_carolina/nc_spm_08_micro.zip && \
+ unzip nc_spm_08_micro.zip && \
+ rm -f nc_spm_08_micro.zip )
+
+# Using LD_LIBRARY_PATH workaround for GRASS GIS < 7.8.8
+export LD_LIBRARY_PATH=$(grass --config path)/lib
+
+# test GRASS GIS raster map
+gdalinfo $HOME/grassdata/nc_spm_08_micro/PERMANENT/cellhd/elevation
+
+# test GRASS GIS vector map
+ogrinfo -so -al $HOME/grassdata/nc_spm_08_micro/PERMANENT/vector/firestations/head

.github/workflows/ubuntu.yml

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+name: Build on Ubuntu
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v3
+      - name: Get dependencies
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y wget git gawk findutils
+          xargs -a <(awk '! /^ *(#|$)/' ".github/workflows/apt.txt") -r -- \
+              sudo apt-get install -y --no-install-recommends --no-install-suggests
+      - name: Create GDAL_AUTOLOAD directory
+        run: |
+          mkdir $HOME/gdalplugins
+      - name: Build
+        run: .github/workflows/build_ubuntu.sh $HOME/gdalplugins
+      - name: Test executing of GDAL with driver on GRASS maps
+        run: .github/workflows/test_simple.sh $HOME/gdalplugins
+