Add datastream mappings

[strawgate]

Fixes: #265

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
__init__.py	0	0	100%
elasticsearch
__init__.py	90	2	97%	208–209
config_flow.py	250	28	88%	83, 122, 230, 300, 323, 337, 378–381, 383–384, 386, 388–390, 392–393, 407–408, 412, 452, 458, 498, 573, 582, 616–617
const.py	33	0	100%
entity_details.py	33	0	100%
errors.py	28	3	89%	51, 60, 67
es_doc_creator.py	181	0	100%
es_doc_publisher.py	256	15	94%	102, 244–245, 261–262, 365, 455–456, 458–459, 461–465
es_gateway.py	100	20	80%	82–83, 98, 102, 118–120, 122, 124–125, 127–131, 133–137
es_index_manager.py	121	8	93%	228–229, 246–247, 252–253, 282–283
es_integration.py	37	2	94%	43–44
es_privilege_check.py	55	0	100%
es_serializer.py	10	1	90%	17
es_version.py	30	0	100%
logger.py	2	0	100%
system_info.py	17	1	94%	23
utils.py	4	0	100%
TOTAL	1247	80	93%

Tests	Skipped	Failures	Errors	Time
95	0 💤	0 ❌	0 🔥	6.309s ⏱️

[strawgate]

Forgot to push the commit that actually populates the fields... should be ready now