Create resolvers and controllers for core views (#13624)

Created:
- Services
- Resolvers
- Controllers
- Tests for services
- Integration tests for GraphQL and Rest

Updated the Rest API playground

Added new feature flag `IS_CORE_VIEW_ENABLED`

Updated `viewFilter` `operand` and `view` `type` to be enums rather than
strings and generated migration file.

Closes https://github.com/twentyhq/core-team-issues/issues/1259

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/metadata-modules/view/enums/view-filter-group-logical-operator.ts

@@ -1,5 +0,0 @@
-export enum ViewFilterGroupLogicalOperator {
-  AND = 'AND',
-  OR = 'OR',
-  NOT = 'NOT',
-}

packages/twenty-server/src/engine/metadata-modules/view/enums/view-open-record-in.ts

@@ -1,4 +0,0 @@
-export enum ViewOpenRecordIn {
-  SIDE_PANEL = 'SIDE_PANEL',
-  RECORD_PAGE = 'RECORD_PAGE',
-}

packages/twenty-server/src/engine/metadata-modules/view/enums/view-sort-direction.ts

@@ -1,4 +0,0 @@
-export enum ViewSortDirection {
-  ASC = 'ASC',
-  DESC = 'DESC',
-}