refactor: relocate options classes to dedicated Options folders

Move configuration options from Core/DataAccess/DataSync/ExcelIO to
dedicated Options folders within each project for better organization.
Update all references and tests accordingly.

NEW/src/JdeScoping.DataSync/Options/DataSourceConfig.cs

@@ -0,0 +1,78 @@
+namespace JdeScoping.DataSync.Options;
+
+/// <summary>
+/// Configuration for a single data source table sync.
+/// </summary>
+public class DataSourceConfig
+{
+    /// <summary>
+    /// Target table name in SQL Server cache.
+    /// </summary>
+    public required string TableName { get; set; }
+
+    /// <summary>
+    /// Source system: "JDE" or "CMS".
+    /// </summary>
+    public required string SourceSystem { get; set; }
+
+    /// <summary>
+    /// Source data identifier (e.g., "WORKORDER", "LOTUSAGE").
+    /// </summary>
+    public string SourceData { get; set; } = string.Empty;
+
+    /// <summary>
+    /// Name of IDataFetcher implementation type (without generic suffix).
+    /// </summary>
+    public required string FetcherTypeName { get; set; }
+
+    /// <summary>
+    /// Optional IPostProcessor implementation type name.
+    /// </summary>
+    public string? PostProcessorTypeName { get; set; }
+
+    /// <summary>
+    /// Whether this data source is enabled for sync.
+    /// </summary>
+    public bool IsEnabled { get; set; } = true;
+
+    /// <summary>
+    /// Mass sync schedule configuration.
+    /// </summary>
+    public ScheduleConfig MassConfig { get; set; } = new();
+
+    /// <summary>
+    /// Daily incremental sync configuration.
+    /// </summary>
+    public ScheduleConfig DailyConfig { get; set; } = new();
+
+    /// <summary>
+    /// Hourly incremental sync configuration.
+    /// </summary>
+    public ScheduleConfig HourlyConfig { get; set; } = new();
+}
+
+/// <summary>
+/// Schedule configuration for a sync type (Mass/Daily/Hourly).
+/// </summary>
+public class ScheduleConfig
+{
+    /// <summary>
+    /// Whether this schedule is enabled.
+    /// </summary>
+    public bool Enabled { get; set; } = true;
+
+    /// <summary>
+    /// Interval in minutes between syncs.
+    /// </summary>
+    public int IntervalMinutes { get; set; }
+
+    /// <summary>
+    /// Whether to truncate the table before syncing (mass updates only).
+    /// </summary>
+    public bool PrepurgeData { get; set; } = false;
+
+    /// <summary>
+    /// Whether to rebuild indexes after syncing (mass updates only).
+    /// </summary>
+    public bool ReIndexData { get; set; } = false;
+}