chore: add .core/ build and release configs

Add go-devops build system configuration for standardised
build, test, and release workflows across the Go ecosystem.

Co-Authored-By: Virgil <virgil@lethean.io>

.core/build.yaml

@@ -0,0 +1,25 @@
+version: 1
+
+project:
+  name: go-forge
+  description: Forgejo integration
+  main: ./cmd/forgegen
+  binary: forgegen
+
+build:
+  cgo: false
+  flags:
+    - -trimpath
+  ldflags:
+    - -s
+    - -w
+
+targets:
+  - os: linux
+    arch: amd64
+  - os: linux
+    arch: arm64
+  - os: darwin
+    arch: arm64
+  - os: windows
+    arch: amd64

.core/release.yaml

@@ -0,0 +1,20 @@
+version: 1
+
+project:
+  name: go-forge
+  repository: core/go-forge
+
+publishers: []
+
+changelog:
+  include:
+    - feat
+    - fix
+    - perf
+    - refactor
+  exclude:
+    - chore
+    - docs
+    - style
+    - test
+    - ci