ci: elasticsearch: Upload script index map examples

Add several examples for `upload_test_results_es.py` script usage
with ElasticSearch index map files for the following use cases:

 * Twister test results.

 * Twister test results with recordings.

 * Memory Footprint data (`twister-footprint.json`).

Signed-off-by: Dmitrii Golovanov <dmitrii.golovanov@intel.com>