feat: auto-detect timezone/locale from proxy IP via geoip

Adds geoip=True parameter to launch(), launch_async(), and
launch_context(). Resolves proxy exit IP → MaxMind GeoLite2-City
lookup → timezone + locale. Downloads ~70MB DB on first use from
P3TERX mirror, caches in ~/.cloakbrowser/geoip/.

Optional deps: pip install cloakbrowser[geoip] / npm install mmdb-lib
Explicit timezone/locale always override auto-detected values.

js/package-lock.json

@@ -1,18 +1,19 @@
 {
   "name": "cloakbrowser",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "cloakbrowser",
-      "version": "0.1.0",
+      "version": "0.2.0",
       "license": "MIT",
       "dependencies": {
         "tar": "^7.0.0"
       },
       "devDependencies": {
         "@types/node": "^20.10.0",
+        "mmdb-lib": "^3.0.2",
         "playwright-core": "^1.40.0",
         "puppeteer-core": "^21.0.0",
         "typescript": "^5.3.0",
@@ -22,10 +23,14 @@
         "node": ">=18.0.0"
       },
       "peerDependencies": {
+        "mmdb-lib": ">=2.0.0",
         "playwright-core": ">=1.40.0",
         "puppeteer-core": ">=21.0.0"
       },
       "peerDependenciesMeta": {
+        "mmdb-lib": {
+          "optional": true
+        },
         "playwright-core": {
           "optional": true
         },
@@ -1839,6 +1844,17 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/mmdb-lib": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/mmdb-lib/-/mmdb-lib-3.0.2.tgz",
+      "integrity": "sha512-7e87vk0DdWT647wjcfEtWeMtjm+zVGqNohN/aeIymbUfjHQ2T4Sx5kM+1irVDBSloNC3CkGKxswdMoo8yhqTDg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10",
+        "npm": ">=6"
+      }
+    },
     "node_modules/ms": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",