Update index doc and README for Steampipe v0.14.0 release

[rajlearner17]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Describe the solution you'd like A clear and concise description of what you want to happen.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered.

Additional context Add any other context or screenshots about the feature request here.

[github-actions[bot]]

'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 30 days.'

[github-actions[bot]]

'This issue was closed because it has been stalled for 90 days with no activity.'