docs: update README to include environment management commands

Merge pull request #12 from Dokploy/fix/environments

chore: bump version to v0.2.8

feat: enhance project info command with environment details

feat: add environment creation and deletion commands

feat: add environment selection to database commands

feat: add environment selection to app management commands

feat: enhance app deployment command with environment selection

Merge pull request #10 from Sebbev/fix/pull-and-push-command

fix(env): Correct prompt message in env push command

feat: Add environment selection for env pull and push commands

feat: update authentication method to use x-api-key header

Merge pull request #6 from Dokploy/2-make-the-cli-work-on-ci

feat: improve token verification with environment variable support

feat: enhance CLI commands with improved flags and error handling