feat: replace n8n_create_data_table with n8n_manage_datatable (10 actions)

Replaces the single-purpose n8n_create_data_table tool with a comprehensive
n8n_manage_datatable tool covering all 10 n8n data table API endpoints:

Table operations: createTable, listTables, getTable, updateTable, deleteTable
Row operations: getRows, insertRows, updateRows, upsertRows, deleteRows

- Filter system with and/or logic and 8 condition operators
- Dry-run support for updateRows, upsertRows, deleteRows
- Pagination, sorting, and full-text search for row listing
- 9 new N8nApiClient methods for all data table endpoints
- Shared error handler and consolidated Zod schemas
- Comprehensive tool documentation with examples per action
- 36 handler tests + 18 API client tests

BREAKING: n8n_create_data_table removed. Use n8n_manage_datatable with
action="createTable" instead.

Based on work by @djakielski in PR #646.
Co-Authored-By: Dominik Jakielski <dominik.jakielski@urlaubsguru.de>

Conceived by Romuald Członkowski - https://www.aiadvisors.pl/en

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/types/n8n-api.ts

@@ -476,4 +476,60 @@ export interface DataTable {
   projectId?: string;
   createdAt?: string;
   updatedAt?: string;
+}
+
+export interface DataTableRow {
+  id?: number;
+  createdAt?: string;
+  updatedAt?: string;
+  [columnName: string]: unknown;
+}
+
+export interface DataTableFilterCondition {
+  columnName: string;
+  condition: 'eq' | 'neq' | 'like' | 'ilike' | 'gt' | 'gte' | 'lt' | 'lte';
+  value?: any;
+}
+
+export interface DataTableFilter {
+  type?: 'and' | 'or';
+  filters: DataTableFilterCondition[];
+}
+
+export interface DataTableListParams {
+  limit?: number;
+  cursor?: string;
+}
+
+export interface DataTableRowListParams {
+  limit?: number;
+  cursor?: string;
+  filter?: string;
+  sortBy?: string;
+  search?: string;
+}
+
+export interface DataTableInsertRowsParams {
+  data: Record<string, unknown>[];
+  returnType?: 'count' | 'id' | 'all';
+}
+
+export interface DataTableUpdateRowsParams {
+  filter: DataTableFilter;
+  data: Record<string, unknown>;
+  returnData?: boolean;
+  dryRun?: boolean;
+}
+
+export interface DataTableUpsertRowParams {
+  filter: DataTableFilter;
+  data: Record<string, unknown>;
+  returnData?: boolean;
+  dryRun?: boolean;
+}
+
+export interface DataTableDeleteRowsParams {
+  filter: string;
+  returnData?: boolean;
+  dryRun?: boolean;
 }