SNOW-1976643: Allow creating multi-session in sprocs if enabled

[sfc-gh-smirzaei]

1. Description:
   With dbt project, we are planning on supporting multiple session insides procs. So we have added new API to _snowflake to create a pristine cloned version of the default server session. Using this, we will create a new new Snowpark session (a new object with new connection obj) and we will set the session_id of the connection (will be done in C API). Currently we have a check in Snowpark lib which disallows creating multiple sessions inside sprocs. With this check we will that check the corresponding param is enabled (this param will only be enabled for dbt sprocs).

For more info on the multi-session project see this design doc: https://docs.google.com/document/d/1lwqyykHo549Vx3UWpFLWot1LIdYrwUjGKtGbQGaCnd8/edit?tab=t.0#heading=h.sil75ywnlm6n

An example of how this new API is used:

create or replace procedure get_session_sp()
returns string
language python
packages=('snowflake-snowpark-python')
runtime_version=3.8
handler='handler'
as
$$import _snowflake

def handler(session):
  new_session = _snowflake.create_session()
  new_session.sql('select foo')
  return 'done'
$$;

3. Fill out the following pre-review checklist:

   • I am adding a new automated test(s) to verify correctness of my new code
     • If this test skips Local Testing mode, I'm requesting review from @snowflakedb/local-testing
   • I am adding new logging messages
   • I am adding a new telemetry message
   • I am adding new credentials
   • I am adding a new dependency
   • If this is a new feature/behavior, I'm adding the Local Testing parity changes.
   • I acknowledge that I have ensured my changes to be thread-safe. Follow the link for more information: Thread-safe Developer Guidelines

[sfc-gh-snowflakedb-snyk-sa]

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[sfc-gh-smirzaei]

This param will be enabled for internal dbt use only.

[sfc-gh-smirzaei]

ENABLE_CREATE_SESSION_IN_STORED_PROCS is an internal param that will be only enabled for internal dbt runs.