[AIRFLOW-7111] Add generate_presigned_url method to S3Hook

[jcarless]

Boto3 generate_presigned_url exposed to S3Hook.

Jira: https://issues.apache.org/jira/browse/AIRFLOW-7111

---

• [ x ] Description above provides context of the change
• [ x ] Unit tests coverage for changes (not needed for documentation changes)
• [ x ] Commits follow "How to write a good git commit message"
• [ x ] Relevant documentation is updated including usage instructions.
• [ x ] I will engage committers as explained in Contribution Workflow Example.

---

[potiuk]

Looks good but the static checks are failing at flake8. I recommend installing pre-commit @jcarless !

[RosterIn]

just need to fix the static check

airflow/providers/amazon/aws/hooks/s3.py:741:111: E501 line too long (133 > 110 characters)
airflow/providers/amazon/aws/hooks/s3.py:743:111: E501 line too long (147 > 110 characters)

[jcarless]

@potiuk @RosterIn Fixed those flake8 errors and rebased to the latest master. I'm not sure why Dockerfile linting is failing though.

[boring-cyborg]

Awesome work, congrats on your first merged pull request!