Adding ruleset filtering as warnings in debug auction and analytics module

[karwaankit32]

Adding ruleset filtering as warnings in debug auction and analytics module which are currently silently executed leading to no understanding/visibility if it carried out.

#4722

Tested the rules-engine bidder-filtering diagnostics with account-level rules.

• Verified debug auction responses now show warnings under ext.prebid.modules.warnings when bidders are removed by rules-engine filters.
• Confirmed filtered bidders are removed from resolvedrequest.imp.ext.prebid.bidder and no bidder HTTP calls are made for bidders filtered before adapter execution.
• Tested multiple account rules firing in one request.
• Tested single-rule filtering.
• Verified verbose trace includes structured analytics_tags for filtered bidders.
• Ran focused unit tests for rules-engine warning generation, include/exclude behavior, hook warning enrichment, and analytics JSON serialization.
• Ran a 3,000-request canary stress test with all requested bidders filtered; all requests returned HTTP 200, with no pod restarts, OOMs, or panic/error logs observed.