feat: update build and dev scripts to use tsdown; add tsdown config file

- Changed build script in packages/logic/package.json to use tsdown instead of tsc.
- Updated dev script in packages/logic/package.json to use tsdown with watch mode.
- Added tsdown as a devDependency in packages/logic/package.json.
- Updated pnpm-lock.yaml to include tsdown and its dependencies across various apps.
- Created a new tsdown.config.ts file to define build configuration for the workspace.

packages/logic/package.json

@@ -12,8 +12,8 @@
         }
     },
     "scripts": {
-        "build": "tsc -b tsconfig.build.json",
-        "dev": "node -e \"console.log('dev not configured')\"",
+        "build": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/logic",
+        "dev": "tsdown -c ../../tsdown.config.ts -F @sammo-ts/logic --watch",
         "lint": "node -e \"console.log('lint not configured')\"",
         "test": "vitest run --config vitest.config.ts"
     },
@@ -21,6 +21,7 @@
         "@sammo-ts/common": "workspace:*"
     },
     "devDependencies": {
+        "tsdown": "^0.18.3",
         "vite-tsconfig-paths": "^4.3.2",
         "vitest": "^4.0.16"
     }