Update version to 0.1.6

Add Gitea package registry support

Add publish-dmg target for versioned DMG uploads

Update deploy-dmg to include Gitea publishing

Document Gitea token requirements in README

app/src-tauri/Cargo.lock

@@ -3440,7 +3440,7 @@ dependencies = [
 
 [[package]]
 name = "spacesh-proto"
-version = "0.1.3"
+version = "0.1.6"
 dependencies = [
  "bytes",
  "serde",

app/src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "spacesh",
-  "version": "0.1.3",
+  "version": "0.1.6",
   "identifier": "xyz.spacesh.app",
   "build": {
     "frontendDist": "../dist",