Switch snapshot ci to new app and rework notification design

.github/workflows/scripts/build_module.sh

@@ -2,15 +2,15 @@
 
 MODULE_NAME=$1
 COMMAND=$2
+CURRENT_OS=$3
+CURRENT_PYTHON=$4
 
 echo "Building $MODULE_NAME..."
 $COMMAND
 BUILD_EXIT=$?
-
 if [ $BUILD_EXIT -ne 0 ]; then
-    echo "❌ $MODULE_NAME build FAILED" >> $BUILD_STATUS
+    printf 'BUILD_RESULT=%s;%s;%s;failure\n' "$CURRENT_OS" "$CURRENT_PYTHON" "$MODULE_NAME" >> "$GITHUB_OUTPUT"
 else
-    echo "✅ $MODULE_NAME build SUCCESS" >> $BUILD_STATUS
+    printf 'BUILD_RESULT=%s;%s;%s;success\n' "$CURRENT_OS" "$CURRENT_PYTHON" "$MODULE_NAME" >> "$GITHUB_OUTPUT"
 fi
-
 exit $BUILD_EXIT

.github/workflows/scripts/check_integration_branch.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+repo=$1
+core_version=$2
+
+# Add "-SNAPSHOT" to powsybl-core version if not already there
+core_snapshot_version=$(echo "$core_version" | grep -q SNAPSHOT && echo "$core_version" || echo "$core_version-SNAPSHOT")
+
+# Find if an integration branch exists
+INTEGRATION_BRANCH=$(git ls-remote --heads "$repo" | grep -E "refs/heads/integration/powsyblcore-$core_snapshot_version" | sed 's/.*refs\/heads\///')
+if [ -n "$INTEGRATION_BRANCH" ]; then
+    echo "SNAPSHOT VERSION EXIST: $INTEGRATION_BRANCH"
+    echo "INTEGRATION_BRANCH=$INTEGRATION_BRANCH" >> "$GITHUB_ENV"
+else
+    echo "No SNAPSHOT branch found"
+    echo "INTEGRATION_BRANCH=main" >> "$GITHUB_ENV"
+fi