add goreleaser settings

.goreleaser.yml

@@ -0,0 +1,35 @@
+project_name: auriga
+before:
+  hooks:
+    - go mod tidy
+builds:
+  - main: ./app/cmd
+    binary: auriga
+    env:
+    - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+archives:
+  - name_template: '{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
+    replacements:
+      darwin: darwin
+      linux: linux
+      windows: windows
+      386: i386
+      amd64: x86_64
+    format_overrides:
+      - goos: windows
+        format: zip
+    files:
+      - docs/*
+      - README.md
+      - README_jp.md
+      - .env.sample
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ .Tag }}-next"
+release:
+  prerelease: auto