Add a setting to disable telemetry

[ajbozarth]

Description

This adds a new enableTelemetry boolean JupyterLab setting that is checked before sending a POST call to prompt/<id>/acceptance.
The default value is true.

Linked Issue(s)

Fixes #10

Type of change

New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Manual testing by switching the setting on and off and checking the inspector network tab to see if the acceptance endpoint is called after accepting a prompt in various ways.

[cbjuan]

We need to add a minimal comment to the README explaining that there is the option to disable the telemetry.

[ajbozarth]

We need to add a minimal comment to the README explaining that there is the option to disable the telemetry.

done

[vabarbosa]

just had a very minor suggestion

[cbjuan]

Complementing @vabarbosa comment, we should extend the comment in GETTING_STARTED.md and README-PyPi.md to reflect which kind of telemetry we do gather (prompt acceptance)

[ajbozarth]

we should extend the comment in GETTING_STARTED.md and README-PyPi.md to reflect which kind of telemetry we do gather (prompt acceptance)

@cbjuan what should it say then? I left it open ended intentionally in case we add more telemetry

[cbjuan]

@ajbozarth this is what @vabarbosa added into the vscode PR Qiskit/qiskit-code-assistant-vscode#101

> **NOTE**: The telemetry does not collect your code nor the suggested code completions. What is collected is whether a code suggestion was accepted or dismissed. and I think is good enough to start with

[cbjuan]

Thanks!