Initial implementation of mcdeploy deployment tool

Single Go binary with five commands:
- build: podman build locally with registry tags + git version
- push: podman push to MCR
- deploy: SSH pull/stop/rm/run on target node
- cert renew: issue TLS cert from Metacrypt via REST API
- status: show container status on a node

Config-driven via TOML service registry describing images,
Dockerfiles, container configs per node. Shells out to podman
for container operations and ssh for remote access.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

go.mod

@@ -0,0 +1,10 @@
+module git.wntrmute.dev/kyle/mcdeploy
+
+go 1.25.7
+
+require (
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.3.0 // indirect
+	github.com/spf13/cobra v1.10.2 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
+)