README.md: Add CodeQL badge
README.md: Add CodeQL badge

Remove LGTM badges (Fix #3958).
tesseract-ocr/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,tesseract-ocr/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,amitdo/tesseract,amitdo/tesseract,amitdo/tesseract