feature(examples): add callminer connector

[fivetran-clgritton]

Description of Change

I'm adding the callminer code that I created for Sonos. The API spec is not online.

Testing

This connector code is being used by Sonos and was pretty thoroughly tested. I no longer have credentials to test.

Checklist

Some tips and links to help validate your PR:

• Tested the connector with fivetran debug command.
• Added/Updated example-specific README.md file, see the README template for the required structure and guidelines.
• Followed Python Coding Standards, refer here

[Copilot]

Pull request overview

Adds a new callminer/ Connector SDK example that syncs CallMiner Bulk Export data (OAuth2 client-credentials, export job polling, download + archive extraction, and per-data-type state tracking), and links it from the repo’s main README.

Changes:

• Added a new multi-file CallMiner connector implementation (auth, API client, sync orchestration, file processing, and state helpers).
• Added CallMiner example documentation (callminer/README.md) and an example configuration.json.
• Updated the root README.md to list the new callminer example.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 21 comments.

Show a summary per file

File	Description
README.md	Adds the CallMiner connector to the examples index.
callminer/connector.py	Main connector entrypoint: schema + update orchestration, pending job resume logic, sync strategy grouping.
callminer/sync.py	Job polling + incremental/LastNHours sync strategy orchestration and checkpointing.
callminer/file_processing.py	Download + extraction + CSV parsing + (currently) threaded processing/upserts.
callminer/api_client.py	CallMiner bulk export job creation/history/status lookup/deletion wrappers.
callminer/auth.py	OAuth2 token acquisition + refresh and retry decorator.
callminer/config.py	Configuration validation and parsing.
callminer/state.py	Per-data-type state read/update helpers.
callminer/configuration.json	Example configuration for local debug (currently non-placeholder values).
callminer/README.md	Example documentation: workflow, configuration, tables, and file/module breakdown.

[fivetran-chinmayichandrasekar]

Left a few comments

[fivetran-JenasVimal]

@fivetran-clgritton please tend to all the co-pilot comments ,
Especially

• the yeild op.checkpoint() as all yield commands have been deprecated
• • log.fine() → log.debug()
  • log.severe() → log.error() , please refer to the new pythonic logging standards
• and also the configuration.json placeholders

[fivetran-JenasVimal]

^^

[fivetran-chinmayichandrasekar]

LGTM

[fivetran-JenasVimal]

Minor suggestions , please re-request when you're done , I will approve !
Thank you .

[fivetran-JenasVimal]

LGTM

[fivetran-chinmayichandrasekar]

LGTM