Add remove_consent_popups flag and fix from_kwargs dict deserialization

Add CrawlerRunConfig.remove_consent_popups (bool, default False) that
targets GDPR/cookie consent popups from 70+ known CMP providers including
OneTrust, Cookiebot, TrustArc, Quantcast, Didomi, Usercentrics,
Sourcepoint, Google FundingChoices, and many more.

The JS strategy uses a 5-phase approach:
1. Click "Accept All" buttons (cleanest dismissal, sets cookies)
2. Try CMP JavaScript APIs (__tcfapi, Didomi, Cookiebot, Osano, Klaro)
3. Remove known CMP containers by selector (~120 selectors)
4. Handle iframe-based and shadow DOM CMPs
5. Restore body scroll and remove CMP body classes

Also fix from_kwargs() in CrawlerRunConfig and BrowserConfig to
auto-deserialize dict values using the existing from_serializable_dict()
infrastructure. Previously, strategy objects like markdown_generator
arriving as {"type": "DefaultMarkdownGenerator", "params": {...}} from
JSON APIs were passed through as raw dicts, causing crashes when the
crawler later called methods on them.

docs/md_v2/core/content-selection.md

@@ -153,8 +153,10 @@ Some sites embed content in `<iframe>` tags. If you want that inline:
 ```python
 config = CrawlerRunConfig(
     # Merge iframe content into the final output
-    process_iframes=True,    
-    remove_overlay_elements=True
+    process_iframes=True,
+    remove_overlay_elements=True,
+    # Remove GDPR/cookie consent popups (OneTrust, Cookiebot, etc.)
+    remove_consent_popups=True
 )
 ```
 

docs/md_v2/core/page-interaction.md

@@ -326,8 +326,9 @@ Below are the key interaction-related parameters in `CrawlerRunConfig`. For a fu
 - **`wait_for`**: CSS (`"css:..."`) or JS (`"js:..."`) expression to wait for.  
 - **`session_id`**: Reuse the same page across calls.  
 - **`cache_mode`**: Whether to read/write from the cache or bypass.  
-- **`remove_overlay_elements`**: Remove certain popups automatically.  
-- **`simulate_user`, `override_navigator`, `magic`**: Anti-bot or “human-like” interactions.
+- **`remove_overlay_elements`**: Remove certain popups automatically.
+- **`remove_consent_popups`**: Remove GDPR/cookie consent popups from known CMP providers (OneTrust, Cookiebot, Didomi, etc.).
+- **`simulate_user`, `override_navigator`, `magic`**: Anti-bot or "human-like" interactions.
 
 ---