add deno extension and config

.vscode/settings.json

@@ -1,3 +1,7 @@
 {
-  "cSpell.words": ["colour", "colours", "iankulin", "sdifj", "stringifying"]
+  "cSpell.words": ["colour", "colours", "iankulin", "sdifj", "stringifying"],
+  "deno.enable": true,
+  "deno.lint": true,
+  "deno.unstable": [],
+  "typescript.preferences.includePackageJsonAutoImports": "off"
 }

deno.json

@@ -8,5 +8,9 @@
     "test": "deno test --allow-env --allow-sys",
     "lint": "deno lint",
     "check": "deno check lib/logger.ts"
+  },
+  "compilerOptions": {
+    "lib": ["deno.ns", "deno.window"],
+    "strict": true
   }
 }