Support creating tasks that reference invokable scripts

[DStape]

Proposal:
The python client should allow users to create tasks that reference scripts, see https://docs.influxdata.com/influxdb/cloud/process-data/manage-tasks/create-task/#create-a-task-that-references-a-script

Current behavior:
It is not possible to create tasks that reference invokable scripts.

Desired behavior:
It should be possible to create tasks that reference invokable scripts. This is already supported by InfluxDB Cloud, the python client just needs updated to support doing so.

Alternatives considered:
The alternative is to use a HTTP client directly (I dno what the status of this is in other, non-python clients, but I need to use python.)

Use case:
There are various resources published online by the Influx people about how and why to use invokable scripts and how these can be utilized from tasks (amongst other resources), so it would be good if the official python client was capable of supporting this.

[DStape]

I note that a lot of the current client code is generated from https://github.com/influxdata/openapi/blob/master/contracts/invocable-scripts.yml - which, as expected, does not contain any scriptIDs or scriptParameters.

However, https://github.com/influxdata/openapi/blob/master/contracts/cloud-diff.yml does define these bits.

This has led me to #525, the outcome of which suggests you may be happy to add support for cloud-only features on a piecemeal basis. If that is the case, would it be possible to extend the accepted request body parameters for /api/v2/tasksso that tasks can reference invokable scripts? Thank you.