Array based filters

• Add support for array-based filter format with multiple filters per property:
  • Filters now accept both simple format (single object) and complex format (array of objects)
  • Simple format: {name: {value: "John", matchMode: "contains"}} (backward compatible)
  • Complex format: {name: [{value: "John", matchMode: "contains", operator: "or"}]} (new)
  • Support logical operators (AND/OR) to combine multiple filters on the same property
  • Example: {name: [{value: "John", operator: "or"}, {value: "Jane", operator: "or"}]}
• Fix isFilterable property in declaration file