Build universal binary instead of architecture dependent

Also added missing .gitignore, added some flags for removing DWARF debugging information, symbol table and all file system paths from the resulting executable.

.gitignore

@@ -0,0 +1,6 @@
+# Environment / workspace settings:
+.vscode/
+
+# Distribution / packaging:
+dist/
+vendor/

.goreleaser.yml

@@ -1,3 +1,5 @@
+---
+version: 2
 project_name: tart-guest-agent
 
 before:
@@ -7,44 +9,47 @@ before:
 builds:
   - id: darwin
     main: cmd/main.go
-    ldflags: >
+    flags: >-
+      -trimpath
+    ldflags: >-
+      -s -w
       -X github.com/cirruslabs/tart-guest-agent/internal/version.Version={{.Version}}
       -X github.com/cirruslabs/tart-guest-agent/internal/version.Commit={{.ShortCommit}}
     env:
       - CGO_ENABLED=1
-    goos:
-      - darwin
-    goarch:
-      - amd64
-      - arm64
+    targets:
+      - darwin_amd64
+      - darwin_arm64
 
   - id: linux
     main: cmd/main.go
-    ldflags: >
+    flags: >-
+      -trimpath
+    ldflags: >-
+      -s -w
       -X github.com/cirruslabs/tart-guest-agent/internal/version.Version={{.Version}}
       -X github.com/cirruslabs/tart-guest-agent/internal/version.Commit={{.ShortCommit}}
     env:
       - CGO_ENABLED=0
-    goos:
-      - linux
-    goarch:
-      - amd64
-      - arm64
+    targets:
+      - linux_amd64
+      - linux_arm64
+
+universal_binaries:
+  - replace: true
+    ids:
+      - darwin
 
 archives:
-  - id: binary
-    format: binary
-    name_template: "{{ .ProjectName }}-{{ .Os }}-{{ .Arch }}"
-  - id: regular
-    name_template: "{{ .ProjectName }}-{{ .Os }}-{{ .Arch }}"
+  - name_template: "{{ .ProjectName }}-{{ .Os }}-{{ .Arch }}"
+    formats:
+      - tar.gz
 
 release:
   prerelease: auto
 
 brews:
-  - name: tart-guest-agent
-    ids:
-      - binary
+  - name: "{{ .ProjectName }}"
     repository:
       owner: cirruslabs
       name: homebrew-cli
@@ -54,13 +59,14 @@ brews:
     skip_upload: auto
 
 nfpms:
-  - package_name: tart-guest-agent
+  - package_name: "{{ .ProjectName }}"
     vendor: Cirrus Labs, Inc.
     homepage: https://github.com/cirruslabs/tart-guest-agent
     maintainer: support@cirruslabs.org
     description: Guest agent for Tart VMs
     section: misc
     formats:
+      - apk
       - deb
       - rpm