feat: App Keys API v2 (#10140)

# Which Problems Are Solved

This PR *partially* addresses #9450 . Specifically, it implements the
resource based API for app keys.

This PR, together with https://github.com/zitadel/zitadel/pull/10077
completes #9450 .

# How the Problems Are Solved

- Implementation of the following endpoints: `CreateApplicationKey`,
`DeleteApplicationKey`, `GetApplicationKey`, `ListApplicationKeys`
- `ListApplicationKeys` can filter by project, app or organization ID.
Sorting is also possible according to some criteria.
  - All endpoints use permissions V2

# TODO

 - [x] Deprecate old endpoints

# Additional Context

Closes #9450

internal/api/grpc/app/v2beta/convert/api_app_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 
 	"github.com/zitadel/zitadel/internal/domain"
 	"github.com/zitadel/zitadel/internal/eventstore/v1/models"
@@ -147,3 +148,71 @@ func Test_apiAuthMethodTypeToPb(t *testing.T) {
 		})
 	}
 }
+func TestGetApplicationKeyQueriesRequestToDomain(t *testing.T) {
+	t.Parallel()
+
+	tt := []struct {
+		testName       string
+		inputOrgID     string
+		inputProjectID string
+		inputAppID     string
+
+		expectedQueriesLength int
+	}{
+		{
+			testName:              "all IDs provided",
+			inputOrgID:            "org-1",
+			inputProjectID:        "proj-1",
+			inputAppID:            "app-1",
+			expectedQueriesLength: 3,
+		},
+		{
+			testName:              "only org ID",
+			inputOrgID:            "org-1",
+			inputProjectID:        " ",
+			inputAppID:            "",
+			expectedQueriesLength: 1,
+		},
+		{
+			testName:              "only project ID",
+			inputOrgID:            "",
+			inputProjectID:        "proj-1",
+			inputAppID:            " ",
+			expectedQueriesLength: 1,
+		},
+		{
+			testName:              "only app ID",
+			inputOrgID:            " ",
+			inputProjectID:        "",
+			inputAppID:            "app-1",
+			expectedQueriesLength: 1,
+		},
+		{
+			testName:              "empty IDs",
+			inputOrgID:            " ",
+			inputProjectID:        " ",
+			inputAppID:            " ",
+			expectedQueriesLength: 0,
+		},
+		{
+			testName:              "with spaces",
+			inputOrgID:            " org-1 ",
+			inputProjectID:        " proj-1 ",
+			inputAppID:            " app-1 ",
+			expectedQueriesLength: 3,
+		},
+	}
+	for _, tc := range tt {
+		t.Run(tc.testName, func(t *testing.T) {
+			t.Parallel()
+
+			// When
+			got, err := GetApplicationKeyQueriesRequestToDomain(tc.inputOrgID, tc.inputProjectID, tc.inputAppID)
+
+			// Then
+			require.NoError(t, err)
+
+			assert.Len(t, got, tc.expectedQueriesLength)
+		})
+	}
+}