Add timeouts to downloading databases and the CLI

[koesie10]

This adds timeouts to downloading CodeQL databases and the CLI. The default for both is 10 seconds, meaning that if no data is received for at least 10 seconds, the download is cancelled with a timeout error. There are configurable settings for both timeouts to allow users with poor internet connections to configure these with longer timeouts.

Closes #903
Closes #3204

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[charisk]

Code changes LGTM.

Do we need to update the CHANGELOG/any docs? Is Product aware of the new setting?