doc: Showcasing a PSS restricred compliant pod

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>

Merge pull request #15 from fredrkl/feat/14-mutate-functionality

feat: Showcasing mutate policy

feat: GH action demo

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>

closes: #6

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>

feat: Better setup descriptions

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>

feat: Demo rule and pod

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>

feat: Setting up kind cluster

Signed-off-by: Fredrik Klingenberg <fredrkl@gmail.com>