Contribute X plugin

[mszostok]

Overview

Contribute X plugin, the initial version from https://github.com/mszostok/botkube-plugins/tree/main/cmd/exec

Acceptance Criteria

• Example usage:

  • Testkube
  • Flux

• Run each installed binary with RBAC (save and export KUBECONFIG)

[mszostok]

Follow-ups

• add opt to define a dedicated RBAC per installed app
• add opt to refresh and register external templates:
  • @Botkube x template refresh
  • @Botkube x template add {url}
  • @Botkube x template list

[mszostok]

Tasks:

• Add initial version for install and run binaries #1112
• Add x plugin docs botkube-docs#233
• Add wrap message template for x plugin #1117
• Add tutorial message template for x plugin #1127
• rename x to exec and add x alias in Botkube repo