Support SET SESSION AUTHORIZATION on trino-python-client

[baohe-zhang]

Description

This PR is to support SET SESSION AUTHORIZATION user and RESET SESSION AUTHORIZATION sql commands on the python client. Those 2 sql commands are supported on the server side from this PR trinodb/trino#16067

Related to issue trinodb/trino#2512

Tested locally with the script:

from trino.dbapi import connect

conn = connect(
    host="localhost",
    port=8080,
    user="baozhang",
    catalog="tpch"
)
cur = conn.cursor()

cur.execute("SELECT COUNT(*) FROM tpch.sf1.orders")
rows = cur.fetchall()
assert rows[0][0] == 1500000

cur.execute("SELECT CURRENT_USER")
rows = cur.fetchall()
assert rows[0][0] == 'baozhang'

cur.execute("SET SESSION AUTHORIZATION 'prestodv'")
cur.execute("SELECT CURRENT_USER")
rows = cur.fetchall()
assert rows[0][0] == 'prestodv'

cur.execute("RESET SESSION AUTHORIZATION")
cur.execute("SELECT CURRENT_USER")
rows = cur.fetchall()
assert rows[0][0] == 'baozhang'

Non-technical explanation

Release notes

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[hashhar]

@baohe-zhang Thanks for the PR.

Once the change is available on the server please add some functional tests as well and we can then merge this PR.

[hashhar]

@baohe-zhang Seems the change was merged in server. Once Trino 426 with this change is available please add some tests.

[hashhar]

@baohe-zhang The server side change was merged. Can you add some tests here and we can merge this.

[hashhar]

Rebased to resolve conflicts.

We agreed to not add integration tests since it requires configuring a Trino catalog with a connector that supports impersonation and would require some mechanism to build such customized docker image for tests.

Verifying that the header is propagated correctly in the requests should be sufficient on the client and testing whether the header behaves is already tested on the server.