Add workspacePreQueryHook module

[Weiko]

Context

Due to the way we dynamically generate resolvers and their logic, we can't simply introduce logic into dedicated services called by standard object resolvers, each generated resolver will directly call pg_graphql (the DB) and return its result.
We want to introduce "query-hooks" logic that will allow us to attach some logic before and after the call to the DB.
This PR adds pre-query-hooks that are called before, more specifically we want to introduce validation logic to the findMany endpoint of the message standard object.

Implementation

• A WorkspacePreQueryHookModule has been added to WorkspaceQueryRunner module, we use it to call WorkspacePreQueryHookService which will use the workspacePreQueryHooks config (that we want to replace by decorators in the future) to map each object and each method (findOne, findMany, etc) to a set of "hooks".

• Added MessageFindManyPreQueryHook, it verifies when findManyMessages is called if we can fetch the different messages of the thread (using threadId filter). If the associated channel does not have share_everything visibility or if the requesting workspace member does not have the message attached to one of its channels, it will throw a 403

• Due to the fact that we want to apply validations, we need to have access to the userId of the request context inside those hooks. Because of that, I'm updating the code to pass down the userId from the graphql config. In practice, we actually might want to send the workspaceMember instead but it's not that easy so instead I'm querying it in the pre-hook when needed.

• Moving "repositories" kind service to a dedicated repositories folder inside messaging. This will enforce us to create those services with a "repository" pattern in mind and avoid any business logic and will allow us to easily replace them later if we decide to use typeorm repositories (or other ORM).

Note

How to add a query hook

For now, only pre-query-hook are implemented.

• Create a query-hook inside query-hooks folder of the module.
• Implement WorkspacePreQueryHook and the "execute" method
• Provide the hook and map it with its name inside the module
• Register the hook inside workspacePreQueryHooks config inside workspace-pre-query-hook.config.ts

Test

[magrinj]

LGTM ! Some minor comments

[magrinj]

👍