feat(tasks): add build tasks for amd64 and arm64 targets

- Introduces separate build tasks for amd64 and arm64 architectures
- Enables cross-compilation for better platform support

deno.jsonc

@@ -2,7 +2,8 @@
     "tasks": {
         "start": "deno run -A src/mod.ts",
         "test": "deno test -A --coverage **/__tests__/*.test.ts",
-        "build": "deno compile --include=VERSION --allow-env --allow-write --output dist/systemd-timer src/mod.ts"
+        "build:amd64": "deno compile --target x86_64-unknown-linux-gnu --include=VERSION --allow-env --allow-write --output dist/systemd-timer-linux-amd64 src/mod.ts",
+        "build:arm64": "deno compile --target aarch64-unknown-linux-gnu --include=VERSION --allow-env --allow-write --output dist/systemd-timer-linux-arm64 src/mod.ts"
     },
     "compilerOptions": {},
     "fmt": {