Synthesis and Evaluation of 1‐Cyclopropyl‐6‐fluoro‐1,4‐dihydro‐4‐oxo‐7‐(4‐(2‐ (4‐substitutedpiperazin‐1‐yl)acetyl)piperazin‐1‐yl) quinoline‐3‐carboxylic Acid Derivatives as Antitubercular and Antibacterial Agents.