Extract query from text2sql agent

[dusvyat]

This introduces some utilities to the sdk for parsing streaming completions for text2sql agents

depends on mindsdb/mindsdb#9698

part of ML-129

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
mindsdb_sdk
agents.py	203	52	74%	33, 101, 104, 112, 120, 138, 156, 166, 169, 173, 175, 177, 179, 181, 183, 245, 258, 262–277, 289, 298–302, 309–310, 356, 364–365, 415, 464–465, 468, 475, 496–498, 502–506
databases.py	45	2	96%	109, 137
handlers.py	39	1	97%	77
jobs.py	97	7	93%	41, 53, 81, 85, 147–150
knowledge_bases.py	126	15	88%	58–61, 155, 159–166, 171–175, 254–257, 326, 343
ml_engines.py	42	3	93%	94, 126, 128
models.py	210	19	91%	109, 140–141, 222, 231, 233, 303, 339, 348, 372, 397, 491, 499, 518, 534, 542, 567, 571, 584
projects.py	64	1	98%	160
query.py	13	1	92%	14
skills.py	53	3	94%	43, 45, 49
tables.py	130	15	88%	140–142, 145, 165, 192, 203–204, 209, 224, 227, 321, 342–347, 356, 376
views.py	37	2	95%	105, 138
mindsdb_sdk/connectors
rest_api.py	225	42	81%	19–29, 35–36, 51, 54–55, 75–77, 98, 101, 108–111, 144–152, 173–174, 209–212, 226–227, 281–286
mindsdb_sdk/utils
agents.py	50	4	92%	72, 79–81
mind.py	41	41	0%	1–119
openai.py	85	30	65%	37–40, 83–85, 107, 148–158, 215–216, 234–240, 258–276
table_schema.py	21	21	0%	1–54
TOTAL	1568	259	83%

Tests	Skipped	Failures	Errors	Time
28	0 💤	0 ❌	0 🔥	10.669s ⏱️

[dusvyat]

@martyna-mindsdb fyi this updates some of the sdk examples

[martyna-mindsdb]

@dusvyat
It looks like the functions implemented in this PR are used under the hood by the streaming feature.

Here is the current SDK example from docs. Please let me know if there is anything that changes from user's perspective, or anything that should be better emphasized in docs.

[dusvyat]

@martyna-mindsdb no doc changes required, just tagging as an FYI

[QuantumPlumber]

Looks good to me, but what happens when the CoT runs multiple SQL queries. Shouldn't we return the last SQL query?

[dusvyat]

Looks good to me, but what happens when the CoT runs multiple SQL queries. Shouldn't we return the last SQL query?

@QuantumPlumber As it stands, only last query that was generated is returned. Hence it accounts for scenarios where sql_db_query task is executed multiple times