feat: add sync pull/diff/push commands for infrastructure-as-code workflow

[iamtoled]

Problem

Dokploy currently has no infrastructure-as-code story. There's no way to:

• Snapshot server state to version-controlled files
• Track configuration drift between environments
• Apply changes from local files back to the server

Proposed Solution

Add three new commands under dokploy sync:

• sync pull - Serialize full Dokploy state (projects, environments, apps, compose, databases) to local YAML files
• sync diff - Compare local YAML state against the live server with colored field-level output
• sync push - Apply local changes back via tRPC update endpoints

Flags

• --project / -p - Filter by project name or ID
• --redact / -r - Mask sensitive fields (passwords, env vars, tokens)
• --dry-run / -d - Preview changes without applying
• --yes / -y - Skip confirmation prompt

v1 Scope

• Pull/diff/push for projects, environments, applications, compose, all 5 DB types
• Sub-resources: domains, ports, mounts, redirects, security
• Update existing resources only (no create/delete on push)

Deferred to v2

• Create/delete resources via push
• Interactive project selection
• .dokployignore, --format json
• Syncing global settings (registries, certificates, servers)

I have a working implementation ready in PR #21.