add testPath and mainPath

[AndreaLaGrotteria]

Feature description

Temporarily removed, to add back

    /**
     * Generates the main path for a given application name, file name, option, and configuration.
     *
     * @param app           the application
     * @param fileName      the name of the file
     * @param option        the GuidesOption to consider
     * @param configuration the GuidesConfiguration to use
     * @return the generated main path
     */
    @NonNull
    static String mainPath(@NonNull App app,
                           @NonNull String fileName,
                           @NonNull GuidesOption option,
                           @NonNull GuidesConfiguration configuration) {
        return pathByFolder(app, fileName, "main", option);
    }

    /**
     * Generates the test path for a given application name, file name, option, and configuration.
     *
     * @param app           the application
     * @param name          the name of the file
     * @param option        the GuidesOption to consider
     * @param configuration the GuidesConfiguration to use
     * @return the generated test path
     */
    @NonNull
    static String testPath(@NonNull App app,
                           @NonNull String name,
                           @NonNull GuidesOption option,
                           @NonNull GuidesConfiguration configuration) {
        String fileName = name;
        if (option.getTestFramework() != null) {
            if (name.endsWith("Test")) {
                fileName = name.substring(0, name.indexOf("Test"));
                fileName += option.getTestFramework() == SPOCK ? "Spec" : "Test";
            }
        }

        return pathByFolder(app, fileName, "test", option);
    }