CI - build with arduino-cli (#9241)

Sync with GCC14 branch test scripts

Remove explicit IDE, HARDWARE & LIBRARIES envirnoment in workflows in favour of script defaults
Remove explicit dependency on IDE & HARDWARE path, assume arduino-cli default paths
Remove explicit library install for platformio, share library path & downloaded libraries with arduino
Bump ConfigFile dependencies, set ArduinoJson to v7 & update blob install script

tests/lib-skip-ino.sh

@@ -0,0 +1,53 @@
+# return 0 if this sketch should not be built in CI (for other archs, not needed, etc.)
+function skip_ino()
+{
+    local ino=$1
+
+    case "$ino" in
+    *"/#attic/"* | \
+    *"/AvrAdcLogger/"* | \
+    *"/RtcTimestampTest/"* | \
+    *"/SoftwareSpi/"* | \
+    *"/TeensyDmaAdcLogger/"* | \
+    *"/TeensyRtcTimestamp/"* | \
+    *"/TeensySdioDemo/"* | \
+    *"/TeensySdioLogger/"* | \
+    *"/UnicodeFilenames/"* | \
+    *"/UserChipSelectFunction/"* | \
+    *"/UserSPIDriver/"* | \
+    *"/debug/"* | \
+    *"/examplesV1/"* | \
+    *"/onewiretest/"*)
+        return 0
+        ;;
+    *"Teensy"*)
+        return 0
+        ;;
+    *)
+        ;;
+    esac
+
+    return 1
+}
+
+# return reason if this sketch is not the main one or it is explicitly disabled with .test.skip in its directory
+function skip_sketch()
+{
+    local sketch=$1
+
+    local sketchdir
+    sketchdir=$(dirname $sketch)
+
+    local sketchdirname
+    sketchdirname=$(basename $sketchdir)
+
+    local sketchname
+    sketchname=$(basename $sketch)
+
+    if [[ "${sketchdirname}.ino" != "$sketchname" ]]; then
+        echo "Skipping $sketch (not the main sketch file)"
+    fi
+    if skip_ino "$sketch" || [[ -f "$sketchdir/.test.skip" ]]; then
+        echo "Skipping $sketch"
+    fi
+}