[8.x] Add more index API examples (#3430)

[lcawl]

Backport

This will backport the following commits from main to 8.x:

• Add more index API examples (#3430)

Questions ?

Please refer to the Backport tool documentation

[github-actions]

Following you can find the validation results for the APIs you have changed.

API	Status	Request	Response
cluster.delete_component_template	🟢	2/2	2/2
cluster.get_component_template	🟢	10/10	10/10
cluster.put_component_template	🔴	21/29	29/29
dangling_indices.delete_dangling_index	⚪	Missing test	Missing test
dangling_indices.import_dangling_index	⚪	Missing test	Missing test
dangling_indices.list_dangling_indices	⚪	Missing test	Missing test
field_caps	🟢	63/63	63/63
indices.analyze	🔴	241/242	242/242
indices.clear_cache	🟢	4/4	4/4
indices.clone	🟢	5/5	5/5
indices.close	🟢	49/49	49/49
indices.create	🔴	1062/1162	1162/1162
indices.delete_alias	🔴	15/15	5/15
indices.delete_index_template	🟢	1/1	1/1
indices.delete_template	🟢	9/9	9/9
indices.delete	🟢	105/105	105/105
indices.disk_usage	🟢	6/6	6/6
indices.exists_template	🟢	15/15	15/15
indices.exists	🟢	39/39	39/39
indices.field_usage_stats	🟢	5/5	5/5
indices.flush	🟢	41/41	41/41
indices.forcemerge	🟢	12/12	12/12
indices.get_alias	🔴	82/82	73/82
indices.get_field_mapping	🟢	15/15	15/15
indices.get_index_template	🟢	11/11	11/11
indices.get_mapping	🔴	133/133	131/133
indices.get_settings	🔴	74/74	71/74
indices.get_template	🟢	30/30	30/30
indices.get	🟢	55/55	55/55
indices.open	🟢	20/20	20/20
indices.put_alias	🔴	59/59	20/59
indices.put_index_template	🔴	55/64	64/64
indices.put_mapping	🔴	111/115	115/115
indices.put_settings	🔴	55/58	58/58
indices.put_template	🔴	45/46	46/46
indices.recovery	🟢	9/9	9/9
indices.refresh	🟢	271/271	271/271
indices.resolve_cluster	🔴	10/12	12/12
indices.resolve_index	🟢	6/6	6/6
indices.rollover	🔴	26/26	1/26
indices.segments	🔴	6/6	5/6
indices.shard_stores	🔴	5/5	4/5
indices.simulate_index_template	🔴	6/7	5/7
indices.simulate_template	🔴	5/5	4/5
indices.split	🟢	11/11	11/11
indices.stats	🔴	112/112	30/111
indices.unfreeze	🟢	1/1	1/1
ingest.get_pipeline	🟢	22/22	22/22
ingest.simulate	🟢	10/10	10/10

You can validate these APIs yourself by using the make validate target.