linux.core: Add interface for segments that have a priority property

This commit adds the IPrioritySegment interface. The interface is to be
implemented by segments that have a priority to provide.

[Added] Interface for segments that have priority.

Change-Id: I27bf6482667a90d0209448f26fecea26ae3c1491
Signed-off-by: Hoang Thuan Pham <hoang.pham@calian.ca>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/204378
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>

analysis/org.eclipse.tracecompass.analysis.os.linux.core/src/org/eclipse/tracecompass/internal/analysis/os/linux/core/segmentstore/IPrioritySegment.java

@@ -0,0 +1,32 @@
+/*******************************************************************************
+* Copyright (c) 2023 Ericsson
+*
+* All rights reserved. This program and the accompanying materials are made
+* available under the terms of the Eclipse Public License 2.0 which
+* accompanies this distribution, and is available at
+* https://www.eclipse.org/legal/epl-2.0/
+*
+* SPDX-License-Identifier: EPL-2.0
+*******************************************************************************/
+
+package org.eclipse.tracecompass.internal.analysis.os.linux.core.segmentstore;
+
+import org.eclipse.tracecompass.segmentstore.core.ISegment;
+
+/**
+ * Interface to be implemented by segments that have a priority to provide. This
+ * priority can be used in analyses and outputs to identify segments.
+ *
+ * This interface is a qualifier interface for segments. A concrete segment type
+ * can implement many such qualifier interfaces.
+ *
+ * @author Hoang Thuan Pham
+ */
+public interface IPrioritySegment extends ISegment {
+    /**
+     * Get the priority of this segment
+     *
+     * @return The priority of this segment
+     */
+    int getPriority();
+}