Add sort, use_pagination and closest (#158)

* add sort param support in CDX API class

see https://nla.github.io/outbackcdx/api.html#operation/query

sort takes string input which must be one of the follwoing:
- default
- closest
- reverse

This commit shall help in closing issue at https://github.com/akamhy/waybackpy/issues/155

* add BlockedSiteError for cases when archiving is blocked by site's robots.txt

* create check_for_blocked_site for handling the BlockedSiteError for sites that are blocking wayback machine by their robots.txt policy

* add attrs use_pagination and closest, which are can be used to use the pagination API and lookup archive close to a timestamp respectively. And now to get out of infinte blank pages loop just check for two succesive black and not total two blank pages while using the CDX server API.

* added cli support for sort, use-pagination and closest

* added tests

* fix codeql warnings, nothing to worry about here.

* fix save test for archive_url

tests/test_save_api.py

@@ -219,4 +219,5 @@ def test_archive_url() -> None:
     save_api.saved_archive = (
         "https://web.archive.org/web/20220124063056/https://example.com/"
     )
+    save_api._archive_url = save_api.saved_archive
     assert save_api.archive_url == save_api.saved_archive