feat(qe): implement relationLoadStrategy query argument (#4601)

Implement per-query configuration of relation load strategy as described in https://www.notion.so/prismaio/Relation-load-strategy-API-013e3ba957a34d45b4de1b722ca6804d, particularly [this section](https://www.notion.so/prismaio/Relation-load-strategy-API-013e3ba957a34d45b4de1b722ca6804d?pvs=4#045efb0e3cd54caeb6584d65f667fbb5) (Variant 1, only top level).

This allows to choose the relation load strategy for all relations in a single query.

Engine API:

```graphql
query {
  findManyUser(relationLoadStrategy: join) {
    login
    posts { title }
  }
}
```

Client API:

```ts
await prisma.user.findMany({
  relationLoadStrategy: 'join', // or 'query'
  select: {
    login: true,
    posts: {
      title: true,
    },
  },
})
```

The new `relationLoadStrategy` argument is available in the following operations:

- findMany
- findFirst
- findFirstOrThrow
- findUnique
- findUniqueOrThrow
- create
- update
- delete
- upsert

The argument is not available in the following operations:
- aggregate
- groupBy
- createMany
- updateMany
- deleteMany

Tests are included for all operations in this PR.

Additionally, it must not be available in the `count` operation, which needs to be handled separately on the client side, because `count` is a synthetic operation that does not exist in the query schema and is not known to the engine, and its TS types are generated based on `findMany` args rather than `aggregate` that it translates to.

Next steps:
- Finalize the Client integration PR
- Implement the global setting

Part of prisma/team-orm#703
Closes: prisma/team-orm#801
Client PR: prisma/prisma#22483

.buildkite/engineer

@@ -54,7 +54,7 @@ fi
 # Check if the system has engineer installed, if not, use a local copy.
 if ! type "engineer" &> /dev/null; then
     # Setup Prisma engine build & test tool (engineer).
-    curl --fail -sSL "https://prisma-engineer.s3-eu-west-1.amazonaws.com/1.65/latest/$OS/engineer.gz" --output engineer.gz
+    curl --fail -sSL "https://prisma-engineer.s3-eu-west-1.amazonaws.com/1.66/latest/$OS/engineer.gz" --output engineer.gz
     gzip -d engineer.gz
     chmod +x engineer
 

docker-compose.yml

@@ -228,7 +228,7 @@ services:
 
   mysql-5-6:
     image: mysql:5.6.50
-    command: mysqld
+    command: mysqld --table_definition_cache=2000
     restart: unless-stopped
     platform: linux/x86_64
     environment:

query-engine/connector-test-kit-rs/query-engine-tests/Cargo.toml

@@ -23,6 +23,7 @@ prisma-value = { path = "../../../libs/prisma-value" }
 query-engine-metrics = { path = "../../metrics"}
 once_cell = "1.15.0"
 futures = "0.3"
+paste = "1.0.14"
 
 [dev-dependencies]
 insta = "1.7.1"

query-engine/connector-test-kit-rs/query-engine-tests/tests/new/mod.rs

@@ -10,5 +10,6 @@ mod native_upsert;
 mod occ;
 mod ref_actions;
 mod regressions;
+mod relation_load_strategy;
 mod update_no_select;
 mod write_conflict;