Update examples

[ea-rus]

Changes:

• updated working_with_tables example
• added test for create ml engine with api key
• using handler for databases.create function

dependent on mindsdb/mindsdb_sql#311

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mindsdb_sdk
connect.py	9	1	89%	42
databases.py	42	3	93%	44, 107, 134
handlers.py	39	1	97%	77
jobs.py	61	8	87%	28, 43–50, 92–95, 119, 124
ml_engines.py	35	1	97%	83
models.py	183	24	87%	105–108, 195, 199–208, 276, 284, 308, 336, 457, 465, 467, 486, 502, 529, 533
projects.py	55	2	96%	77, 157
query.py	13	4	69%	12–16
server.py	24	2	92%	27, 55
tables.py	101	7	93%	146, 158, 174, 240–242, 270, 291
views.py	37	2	95%	105, 138
mindsdb_sdk/connectors
rest_api.py	89	18	80%	14–24, 30–31, 64–66, 83, 86, 93–96
mindsdb_sdk/utils
objects_collection.py	38	23	39%	8–13, 25–26, 29, 32–36, 39–43, 46–50, 53–57
TOTAL	746	96	87%

Tests	Skipped	Failures	Errors	Time
3	0 💤	0 ❌	0 🔥	9.393s ⏱️