feat: App API v2 (#10077)

# Which Problems Are Solved

This PR *partially* addresses #9450 . Specifically, it implements the
resource based API for the apps. APIs for app keys ARE not part of this
PR.

# How the Problems Are Solved

- `CreateApplication`, `PatchApplication` (update) and
`RegenerateClientSecret` endpoints are now unique for all app types:
API, SAML and OIDC apps.
  - All new endpoints have integration tests
  - All new endpoints are using permission checks V2

# Additional Changes

- The `ListApplications` endpoint allows to do sorting (see protobuf for
details) and filtering by app type (see protobuf).
- SAML and OIDC update endpoint can now receive requests for partial
updates

# Additional Context

Partially addresses #9450

internal/api/grpc/app/v2beta/query.go

@@ -0,0 +1,37 @@
+package app
+
+import (
+	"context"
+
+	"github.com/zitadel/zitadel/internal/api/grpc/app/v2beta/convert"
+	filter "github.com/zitadel/zitadel/internal/api/grpc/filter/v2"
+	app "github.com/zitadel/zitadel/pkg/grpc/app/v2beta"
+)
+
+func (s *Server) GetApplication(ctx context.Context, req *app.GetApplicationRequest) (*app.GetApplicationResponse, error) {
+	res, err := s.query.AppByIDWithPermission(ctx, req.GetId(), false, s.checkPermission)
+	if err != nil {
+		return nil, err
+	}
+
+	return &app.GetApplicationResponse{
+		App: convert.AppToPb(res),
+	}, nil
+}
+
+func (s *Server) ListApplications(ctx context.Context, req *app.ListApplicationsRequest) (*app.ListApplicationsResponse, error) {
+	queries, err := convert.ListApplicationsRequestToModel(s.systemDefaults, req)
+	if err != nil {
+		return nil, err
+	}
+
+	res, err := s.query.SearchApps(ctx, queries, s.checkPermission)
+	if err != nil {
+		return nil, err
+	}
+
+	return &app.ListApplicationsResponse{
+		Applications: convert.AppsToPb(res.Apps),
+		Pagination:   filter.QueryToPaginationPb(queries.SearchRequest, res.SearchResponse),
+	}, nil
+}