chore: Introduce go releaser

.gitignore

@@ -1 +1,2 @@
 .vscode
+dist

.goreleaser.yml

@@ -0,0 +1,36 @@
+before:
+  hooks:
+    - go mod download
+builds:
+  - id: nsd
+    dir: nsd
+    binary: nsd
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    ignore:
+      - goos: darwin
+        goarch: 386
+      - goos: linux
+        goarch: 386
+archives:
+  - replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      386: i386
+      amd64: x86_64
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^chore:'
+      - '^test:'

.travis.yml

@@ -1,2 +1,14 @@
 language: go
 go: "1.15"
+
+script:
+  - go test ./...
+  - curl -sfL https://git.io/goreleaser | sh -s -- check
+
+deploy:
+  - provider: script
+    skip_cleanup: true
+    script: curl -sL https://git.io/goreleaser | bash
+    on:
+      tags: true
+      condition: $TRAVIS_OS_NAME = linux