CICD: Add Check for Changes in the Supported Dive Computer Lists.

Add a check that will fail whenever there is a change in the list of
supported dive computers in libdivecomputer that is not reflected in the
`SupportedDivecomputers.*` lists.
Also add a script for a simplified update of these lists.
From a discussion with @dirkhh in https://github.com/subsurface/libdc/pull/71#issuecomment-2565384338.

Signed-off-by: Michael Keller <github@ike.ch>

.github/workflows/check-divecomputer-lists.yml

@@ -0,0 +1,40 @@
+name: Check the Supported Dive Computer Lists
+
+on:
+  push:
+    branches:
+    - master
+    paths:
+    - libdivdcomputer/src/descriptor.c
+    - SupportedDivecomputers.txt
+    - SupportedDivecomputers.html
+    - scripts
+  pull_request:
+    branches:
+    - master
+    paths:
+    - libdivdcomputer/src/descriptor.c
+    - SupportedDivecomputers.txt
+    - SupportedDivecomputers.html
+    - scripts
+
+jobs:
+  check:
+    runs-on: ubuntu-24.04
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Check the Supported Dive Computer Lists
+      run: |
+        perl scripts/parse-descriptor.pl SupportedDivecomputers_new.txt
+        diff -u SupportedDivecomputers.txt SupportedDivecomputers_new.txt
+        TXT_EXIT_CODE=$?
+
+        perl scripts/parse-descriptor.pl SupportedDivecomputers_new.html
+        diff -u SupportedDivecomputers.html SupportedDivecomputers_new.html
+
+        if [ $? -ne 0 -o $TXT_EXIT_CODE -ne 0 ] ; then
+          echo "The list of supported dive computers in libdivecomputer has changed. Please run `scripts/update-supported-divecomputer-lists.sh` and commit the resulting changes."
+          exit 1
+        fi

scripts/update-supported-divecomputer-lists.sh

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+#!/bin/bash
+
+#
+# Update the Lists of Supported Dive Computers Based
+# on the Information in the libdivecomputer Source Code
+#
+
+CONTAINER_NAME=subsurface-android-builder
+
+pushd . &> /dev/null
+cd "$(dirname "$0")/.."
+
+perl scripts/parse-descriptor.pl SupportedDivecomputers.html
+perl scripts/parse-descriptor.pl SupportedDivecomputers.txt
+
+popd &> /dev/null