[REFACTOR] twenty-shared multi barrel and CJS/ESM build with preconstruct (#11083)

# Introduction

In this PR we've migrated `twenty-shared` from a `vite` app
[libary-mode](https://vite.dev/guide/build#library-mode) to a
[preconstruct](https://preconstruct.tools/) "atomic" application ( in
the future would like to introduce preconstruct to handle of all our
atomic dependencies such as `twenty-emails` `twenty-ui` etc it will be
integrated at the monorepo's root directly, would be to invasive in the
first, starting incremental via `twenty-shared`)

For more information regarding the motivations please refer to nor:
- https://github.com/twentyhq/core-team-issues/issues/587
-
https://github.com/twentyhq/core-team-issues/issues/281#issuecomment-2630949682

close https://github.com/twentyhq/core-team-issues/issues/589
close https://github.com/twentyhq/core-team-issues/issues/590

## How to test
In order to ease the review this PR will ship all the codegen at the
very end, the actual meaning full diff is `+2,411 −114`
In order to migrate existing dependent packages to `twenty-shared` multi
barrel new arch you need to run in local:
```sh
yarn tsx packages/twenty-shared/scripts/migrateFromSingleToMultiBarrelImport.ts && \
npx nx run-many -t lint --fix -p twenty-front twenty-ui twenty-server twenty-emails twenty-shared twenty-zapier
```
Note that `migrateFromSingleToMultiBarrelImport` is idempotent, it's atm
included in the PR but should not be merged. ( such as codegen will be
added before merging this script will be removed )

## Misc
- related opened issue preconstruct
https://github.com/preconstruct/preconstruct/issues/617

## Closed related PR
- https://github.com/twentyhq/twenty/pull/11028
- https://github.com/twentyhq/twenty/pull/10993
- https://github.com/twentyhq/twenty/pull/10960

## Upcoming enhancement: ( in others dedicated PRs )
- 1/ refactor generate barrel to export atomic module instead of `*`
- 2/ generate barrel own package with several files and tests
- 3/ Migration twenty-ui the same way
- 4/ Use `preconstruct` at monorepo global level

## Conclusion
As always any suggestions are welcomed !

packages/twenty-front/src/modules/serverless-functions/utils/getDefaultFunctionInputFromInputSchema.ts

@@ -1,6 +1,6 @@
 import { InputSchema } from '@/workflow/types/InputSchema';
 import { FunctionInput } from '@/workflow/workflow-steps/workflow-actions/code-action/types/FunctionInput';
-import { isDefined } from 'twenty-shared';
+import { isDefined } from 'twenty-shared/utils';
 
 export const getDefaultFunctionInputFromInputSchema = (
   inputSchema: InputSchema,

packages/twenty-front/src/modules/serverless-functions/utils/getFunctionInputFromSourceCode.ts

@@ -2,7 +2,7 @@ import { getDefaultFunctionInputFromInputSchema } from '@/serverless-functions/u
 import { getFunctionInputSchema } from '@/serverless-functions/utils/getFunctionInputSchema';
 import { FunctionInput } from '@/workflow/workflow-steps/workflow-actions/code-action/types/FunctionInput';
 import { isObject } from '@sniptt/guards';
-import { isDefined } from 'twenty-shared';
+import { isDefined } from 'twenty-shared/utils';
 
 export const getFunctionInputFromSourceCode = (
   sourceCode?: string,

packages/twenty-front/src/modules/serverless-functions/utils/getFunctionInputSchema.ts

@@ -1,5 +1,4 @@
 import { InputSchema, InputSchemaProperty } from '@/workflow/types/InputSchema';
-import { isDefined } from 'twenty-shared';
 import {
   ArrayTypeNode,
   ArrowFunction,
@@ -16,6 +15,7 @@ import {
   UnionTypeNode,
   VariableStatement,
 } from 'typescript';
+import { isDefined } from 'twenty-shared/utils';
 
 const getTypeString = (typeNode: TypeNode): InputSchemaProperty => {
   switch (typeNode.kind) {

packages/twenty-front/src/modules/serverless-functions/utils/getFunctionOutputSchema.ts

@@ -1,7 +1,7 @@
 import { InputSchemaPropertyType } from '@/workflow/types/InputSchema';
 import { BaseOutputSchema } from '@/workflow/workflow-variables/types/StepOutputSchema';
 import { isObject } from '@sniptt/guards';
-import { isDefined } from 'twenty-shared';
+import { isDefined } from 'twenty-shared/utils';
 
 const getValueType = (value: any): InputSchemaPropertyType => {
   if (!isDefined(value) || value === null) {