Document installation and use

[tam7t]

TL;DR

Include documentation for:

• requirements for installing the driver + plugin
• process for installing the driver + plugin
• how to mount secrets into pods and the SecretProviderClass CRD
• the necessary IAM permissions

Design

Proposal

Alternatives considered

Resources

Additional information

[tam7t]

The documentation should also call out the risks of accessing secrets through the filesystem (path traversal vulnerabilities escalating into more serious impacts) compared to using the API directly.

(related issue: kubernetes/kubernetes#86186)

[tam7t]

#42 addressed the security considerations.