fix: add missing GraphQL feature flags (post_ctas_fetch_enabled et al)

Twitter's GraphQL API now requires additional feature flags that were missing.
This fixes issue #37 and merges PR #31 (home timeline command).

Added to global features.json:
- post_ctas_fetch_enabled
- responsive_web_graphql_exclude_directive_enabled
- blue_business_profile_image_shape_enabled
- tweetypie_unmention_optimization_enabled
- responsive_web_text_conversations_enabled
- interactive_text_enabled
- vibe_api_enabled
- responsive_web_twitter_blue_verified_badge_is_enabled

Fixes #37

src/lib/features.json

@@ -1,5 +1,13 @@
 {
   "global": {
-    "responsive_web_grok_annotations_enabled": false
+    "responsive_web_grok_annotations_enabled": false,
+    "post_ctas_fetch_enabled": false,
+    "responsive_web_graphql_exclude_directive_enabled": true,
+    "blue_business_profile_image_shape_enabled": true,
+    "tweetypie_unmention_optimization_enabled": true,
+    "responsive_web_text_conversations_enabled": false,
+    "interactive_text_enabled": true,
+    "vibe_api_enabled": true,
+    "responsive_web_twitter_blue_verified_badge_is_enabled": true
   }
 }