chore: add project scaffolding and build tooling

Go module, makefile (build, test, docker, e2e targets), version embedding, initialize script, vars template, ignores and the project plan.

vars.example

@@ -0,0 +1,13 @@
+#/usr/bin/env bash
+
+export GIT_HOST=git.bjphoster.com
+export GO_BUILDER=golang
+export GO_VERSION=1.27.1-alpine
+export GO_OS=linux
+export GO_ARCH=amd64
+export REPO_ORG=source
+export REPO_NAME=dpsapi
+export CONTAINER_ORG=git.bjphoster.com/source
+export CONTAINER_IMAGE=dpsapi
+export CONTAINER_IP=127.0.0.1
+export CONTAINER_PORT=3000