Description: Add a table export to markdown format Current implementation allows to export only outline and text from LibreOffice to markdown Steps to Reproduce: 1. Open any Writer document contains a table 2. Try to save it as markdown file 3. Open the markdown file -> it has no any table inside Actual Results: LibreOffice saves no any table to markdown Expected Results: LibreOffice save all table to markdown Reproducible: Always User Profile Reset: No Additional Info: Version: 26.2.0.0.alpha0+ (X86_64) / LibreOffice Community Build ID: 53a9cee01759ce54c4ee50468958531a360640f9 CPU threads: 16; OS: Windows 10 X86_64 (build 19045); UI render: Skia/Vulkan; VCL: win Locale: ru-RU (ru_RU); UI: ru-RU Calc: CL threaded