feat: Add Sonar support + integrate common precaching

Resolves #37 (closed)

Resolves #38 (closed)

src/main/java/org/eclipsefoundation/wg/exceptions/CacheLoadingException.java

-/*********************************************************************
-* Copyright (c) 2023 Eclipse Foundation.
-*
-* This program and the accompanying materials are made
-* available under the terms of the Eclipse Public License 2.0
-* which is available at https://www.eclipse.org/legal/epl-2.0/
-*
-* Author: Zachary Sabourin <zachary.sabourin@eclipse-foundation.org>
-*
-* SPDX-License-Identifier: EPL-2.0
-**********************************************************************/
-package org.eclipsefoundation.wg.exceptions;
-
-/**
- * Exception used to indicate an error occured while loading values into or from
- * a Loading cache.
- */
-public class CacheLoadingException extends Exception {
-    private static final long serialVersionUID = 1L;
-
-    /**
-     * Constructs a CacheLoadingException using the given custom error message and
-     * throwable cause.
-     * 
-     * @param message The custom error message
-     * @param cause   The cause of the exception.
-     */
-    public CacheLoadingException(String message, Throwable cause) {
-        super(message, cause);
-    }
-}