feat: `cosine_similarity` function #6043

Job	Run time
Build	5m 49s
Format (rustfmt +nightly)	16s
Lint (clippy)	4m 59s
Cache Maintenance	0s
Node.js Binding Tests	5m 0s
PG Protocol Tests	18s
Process Integration Tests (pytest)	1m 4s
Python Binding Tests	6m 22s
SQL Logic Tests (postgres)	12s
SQL Logic Tests (flightsql)	16s
SQL Logic Tests (rpc)	13s
Unit Tests	6m 37s
Service Integration Tests (SLT)	2m 38s
MinIO Integration Tests (SLT::MinIO)	2m 56s
Datasource Integration (Clickhouse)	2m 31s
Build and Push Docker Image	0s
Datasource Integration (SQLite)	2m 33s
Datasource Integration (Cassandra)	1m 48s
Datasource Integration (MySQL)	2m 59s
Datasource Integration (MongoDB)	35s
Datasource Integration (SQLServer)	9m 18s
Datasource Integration (PostgreSQL)	2m 26s
Snowflake Integration Tests (SLT::Snowflake)	2m 11s
	1h 1m 1s

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