Merge pull request #4513 from EnterpriseDB/docs/biganimal/q2-extensions

BigAnimal: Q2 extensions

product_docs/docs/biganimal/release/overview/extensions_tools.mdx

@@ -19,6 +19,15 @@ EDB develops and maintains several extensions and tools. These include:
   - [Autocluster](/pg_extensions/advanced_storage_pack/#autocluster) — Provides faster access to clustered data by keeping track of the last inserted row for any value in a side table. 
 
   - [Refdata](/pg_extensions/advanced_storage_pack/#refdata) — Can provide performance gains of 5-10% and increased scalability.
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 - [EDB Postgres Tuner](/pg_extensions/pg_tuner/) — Provides safe recommendations that maximize the use of available resources. 
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+- [EDB Query Advisor](/pg_extensions/query_advisor/) — Provides index recommendations by keeping statistics on predicates found in WHERE statements, JOIN clauses, and workload queries.
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+- [EDB Wait States](/pg_extensions/wait_states/) — Probes each of the running sessions at regular intervals.
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+- [PG Failover Slots](/pg_extensions/pg_failover_slots/) — Is an extension released as open source software under the PostgreSQL License. If you have logical replication publications on Postgres databases that are also part of a streaming replication architecture, PG Failover Slots avoids the need for you to reseed your logical replication tables when a new standby gets promoted to primary.
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 - [Foreign Data Wrappers](foreign_data_wrappers) — Allow you to connect your Postgres database server to external data sources.
 - [Connection poolers](poolers) — Allow you to manage your connections to your Postgres database.