fix: add tsconfig.json, bun-types, and .gitignore for typecheck oracle

Author: stooit

.gitignore

@@ -0,0 +1,5 @@
+node_modules/
+bun.lock
+*.lock
+dist/
+.DS_Store

package.json

@@ -7,5 +7,8 @@
     "test": "bun test",
     "lint": "echo 'no linter configured'"
   },
-  "devDependencies": {}
+  "devDependencies": {
+    "bun-types": "latest",
+    "typescript": "^5.4.0"
+  }
 }

tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "skipLibCheck": true,
+    "types": ["bun-types"]
+  },
+  "include": ["src/**/*", "test/**/*"]
+}