Improve performance on metadata computation (#12785)

In this PR:

## Improve recompute metadata cache performance. We are aiming for
~100ms

Deleting relationMetadata table and FKs pointing on it
Fetching indexMetadata and indexFieldMetadata in a separate query as
typeorm is suboptimizing

## Remove caching lock

As recomputing the metadata cache is lighter, we try to stop preventing
multiple concurrent computations. This also simplifies interfaces

## Introduce self recovery mecanisms to recompute cache automatically if
corrupted

Aka getFreshObjectMetadataMaps

## custom object resolver performance improvement:  1sec to 200ms

Double check queries and indexes used while creating a custom object
Remove the queries to db to use the cached objectMetadataMap

## reduce objectMetadataMaps to 500kb
<img width="222" alt="image"
src="https://github.com/user-attachments/assets/2370dc80-49b6-4b63-8d5e-30c5ebdaa062"
/>

We used to stored 3 fieldMetadataMaps (byId, byName, byJoinColumnName).
While this is great for devXP, this is not great for performances.
Using the same mecanisme as for objectMetadataMap: we only keep byIdMap
and introduce two otherMaps to idByName, idByJoinColumnName to make the
bridge

## Add dataloader on IndexMetadata (aka indexMetadataList in the API)

## Improve field resolver performances too

## Deprecate ClientConfig

packages/twenty-front/src/modules/client-config/graphql/queries/getClientConfig.ts

@@ -1,75 +0,0 @@
-import { gql } from '@apollo/client';
-
-export const GET_CLIENT_CONFIG = gql`
-  query GetClientConfig {
-    clientConfig {
-      aiModels {
-        modelId
-        label
-        provider
-        inputCostPer1kTokensInCredits
-        outputCostPer1kTokensInCredits
-      }
-      billing {
-        isBillingEnabled
-        billingUrl
-        trialPeriods {
-          duration
-          isCreditCardRequired
-        }
-      }
-      authProviders {
-        google
-        password
-        microsoft
-        sso {
-          id
-          name
-          type
-          status
-          issuer
-        }
-      }
-      signInPrefilled
-      isMultiWorkspaceEnabled
-      isEmailVerificationRequired
-      defaultSubdomain
-      frontDomain
-      debugMode
-      analyticsEnabled
-      isAttachmentPreviewEnabled
-      support {
-        supportDriver
-        supportFrontChatId
-      }
-      sentry {
-        dsn
-        environment
-        release
-      }
-      captcha {
-        provider
-        siteKey
-      }
-      api {
-        mutationMaximumAffectedRecords
-      }
-      chromeExtensionId
-      canManageFeatureFlags
-      publicFeatureFlags {
-        key
-        metadata {
-          label
-          description
-          imagePath
-        }
-      }
-      isMicrosoftMessagingEnabled
-      isMicrosoftCalendarEnabled
-      isGoogleMessagingEnabled
-      isGoogleCalendarEnabled
-      isConfigVariablesInDbEnabled
-      calendarBookingPageId
-    }
-  }
-`;

packages/twenty-front/src/modules/client-config/hooks/useClientConfig.ts

@@ -1,6 +1,6 @@
+import { ClientConfig } from '@/client-config/types/ClientConfig';
 import { useCallback } from 'react';
 import { useRecoilValue, useSetRecoilState } from 'recoil';
-import { ClientConfig } from '~/generated/graphql';
 import { clientConfigApiStatusState } from '../states/clientConfigApiStatusState';
 import { getClientConfig } from '../utils/getClientConfig';
 

packages/twenty-front/src/modules/client-config/states/clientConfigApiStatusState.ts

@@ -1,5 +1,5 @@
+import { ClientConfig } from '@/client-config/types/ClientConfig';
 import { createState } from 'twenty-ui/utilities';
-import { ClientConfig } from '~/generated/graphql';
 
 type ClientConfigApiStatus = {
   isLoadedOnce: boolean;

packages/twenty-front/src/modules/client-config/types/ClientConfig.ts

@@ -0,0 +1,37 @@
+import {
+  ApiConfig,
+  AuthProviders,
+  Billing,
+  Captcha,
+  ClientAiModelConfig,
+  PublicFeatureFlag,
+  Sentry,
+  Support,
+} from '~/generated-metadata/graphql';
+
+export type ClientConfig = {
+  aiModels: Array<ClientAiModelConfig>;
+  analyticsEnabled: boolean;
+  api: ApiConfig;
+  authProviders: AuthProviders;
+  billing: Billing;
+  calendarBookingPageId?: string;
+  canManageFeatureFlags: boolean;
+  captcha: Captcha;
+  chromeExtensionId?: string;
+  debugMode: boolean;
+  defaultSubdomain?: string;
+  frontDomain: string;
+  isAttachmentPreviewEnabled: boolean;
+  isConfigVariablesInDbEnabled: boolean;
+  isEmailVerificationRequired: boolean;
+  isGoogleCalendarEnabled: boolean;
+  isGoogleMessagingEnabled: boolean;
+  isMicrosoftCalendarEnabled: boolean;
+  isMicrosoftMessagingEnabled: boolean;
+  isMultiWorkspaceEnabled: boolean;
+  publicFeatureFlags: Array<PublicFeatureFlag>;
+  sentry: Sentry;
+  signInPrefilled: boolean;
+  support: Support;
+};

packages/twenty-front/src/modules/client-config/utils/getClientConfig.ts

@@ -1,5 +1,5 @@
+import { ClientConfig } from '@/client-config/types/ClientConfig';
 import { REACT_APP_SERVER_BASE_URL } from '~/config';
-import { ClientConfig } from '~/generated/graphql';
 
 export const getClientConfig = async (): Promise<ClientConfig> => {
   const response = await fetch(`${REACT_APP_SERVER_BASE_URL}/client-config`, {