Add PyMySQL instrumentor support for sqlcommenting

[tammy-baylis-swi]

Description

Updates PyMySQL instrumentor to support sqlcommenting.

Depends on # 2897

Fixes # 2902

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Added unit tests. Used local installations of opentelemetry-instrumentation-dbapi (in ##2897) and upstream dependencies with this updated downstream instrumentor on a Flask app that use PyMySQL to query MySQL with general logs enabled to check sqlcomments.

Example general log entry after this update, which now includes sqlcomment:

2024-10-30T19:33:46.830661Z 25 Query SELECT * FROM city WHERE id = '1818' /*db_driver='pymysql%3A1.4.6',dbapi_level='2.0',dbapi_threadsafety=1,driver_paramstyle='pyformat',mysql_client_version='1.4.6',traceparent='00-f8688332bc5467bfa8fe1a9753d7271a-f7add29c81e79082-01'*/

Example corresponding exported span, whose span ID matches sqlcomment traceparent span ID:

InstrumentationScope opentelemetry.instrumentation.pymysql 0.49b0.dev
Span #0
    Trace ID       : f8688332bc5467bfa8fe1a9753d7271a
    Parent ID      : c125e4709cfe1361
    ID             : f7add29c81e79082
    Name           : SELECT
    Kind           : Client
    Start time     : 2024-10-30 19:33:46.829773588 +0000 UTC
    End time       : 2024-10-30 19:33:46.833294379 +0000 UTC
    Status code    : Unset
    Status message :
Attributes:
     -> db.system: Str(mysql)
     -> db.name: Str(world)
     -> db.statement: Str(SELECT * FROM city WHERE id = %s)
     -> db.user: Str(world)
     -> net.peer.name: Str(mysql-world-db)
     -> net.peer.port: Int(3306)

Does This PR Require a Core Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[tammy-baylis-swi]

Going to close this and put in a fresh PR later. There's more that I want to add.