Add TDD band support to CIQ 4G Generator with L2300 band configuration, implement non-breaking space stripping in integer parsing, update default band blocks to include L700/L2300, add TDD_BANDS set for conditional UL EARFCN omission, extend 4x4 MIMO mode assignment to L2300, and refactor output column builder to skip UL EARFCN columns for TDD bands

Add CIQ 4G Generator with LNBTS/LNCEL sheet generation, implement site parsing from CIQ brut Excel with eNodeB/cell name extraction, band detection from cell names, sector ID mapping, DL/UL EARFCN conversion, MIMO mode assignment per band, and multi-band block configuration builder with TAC/PCI/RSI parameters and Excel export