Add ability to configure specific recommendations during BotKube installation/upgrade

[pkosiec]

Overview

Implement ability to turn on/off recommendations according to the proposal: https://github.com/kubeshop/botkube/blob/main/docs/proposal/2022-06-14-configuration-bindings.md#new-syntax

        # Recommendations about the best practices
        recommendations:
          image:     # "Checks if 'latest' image tag is used for container image."
            enabled: true
          pod:       # "Checks if labels are missing in the pod specs."
            enabled: true
          ingress:   # "Checks if services and tls secrets used in ingress are available."
            enabled: true

Acceptance Criteria

• Support recommendation configuration under source and enable/disable proper recommendations during BotKube startup
• Ensure enabling/disabling filters in runtime via @BotKube command still works
• Update documentation
• Update merging strategy to "override" to be consistent with Executor.Kubectl.Commands.RestrictAccess
• Create informers if recommendations are enabled, even if Ingress and Pod resources are not configured in the resources configuration (blocked by Support routing notifications to a given channel based on Kubernetes Sources #676)

Reason

See epic #596