Storage: Unified Storage based on Entity API (#71977)

* first round of entityapi updates

- quote column names and clean up insert/update queries
- replace grn with guid
- streamline table structure

fixes

streamline entity history

move EntitySummary into proto

remove EntitySummary

add guid to json

fix tests

change DB_Uuid to DB_NVarchar

fix folder test

convert interface to any

more cleanup

start entity store under grafana-apiserver dskit target

CRUD working, kind of

rough cut of wiring entity api to kube-apiserver

fake grafana user in context

add key to entity

list working

revert unnecessary changes

move entity storage files to their own package, clean up

use accessor to read/write grafana annotations

implement separate Create and Update functions

* go mod tidy

* switch from Kind to resource

* basic grpc storage server

* basic support for grpc entity store

* don't connect to database unless it's needed, pass user identity over grpc

* support getting user from k8s context, fix some mysql issues

* assign owner to snowflake dependency

* switch from ulid to uuid for guids

* cleanup, rename Search to List

* remove entityListResult

* EntityAPI: remove extra user abstraction (#79033)

* remove extra user abstraction

* add test stub (but

* move grpc context setup into client wrapper, fix lint issue

* remove unused constants

* remove custom json stuff

* basic list filtering, add todo

* change target to storage-server, allow entityStore flag in prod mode

* fix issue with Update

* EntityAPI: make test work, need to resolve expected differences (#79123)

* make test work, need to resolve expected differences

* remove the fields not supported by legacy

* sanitize out the bits legacy does not support

* sanitize out the bits legacy does not support

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

* update feature toggle generated files

* remove unused http headers

* update feature flag strategy

* devmode

* update readme

* spelling

* readme

---------

Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

docs/sources/setup-grafana/configure-grafana/feature-toggles/index.md

@@ -172,11 +172,12 @@ Experimental features might be changed or removed without prior notice.
 
 The following toggles require explicitly setting Grafana's [app mode]({{< relref "../_index.md#app_mode" >}}) to 'development' before you can enable this feature toggle. These features tend to be experimental.
 
-| Feature toggle name       | Description                                                                                  |
-| ------------------------- | -------------------------------------------------------------------------------------------- |
-| `entityStore`             | SQL-based entity store (requires storage flag also)                                          |
-| `externalServiceAuth`     | Starts an OAuth2 authentication provider for external services                               |
-| `idForwarding`            | Generate signed id token for identity that can be forwarded to plugins and external services |
-| `externalServiceAccounts` | Automatic service account and token setup for plugins                                        |
-| `panelTitleSearchInV1`    | Enable searching for dashboards using panel title in search v1                               |
-| `ssoSettingsApi`          | Enables the SSO settings API                                                                 |
+| Feature toggle name                   | Description                                                                                  |
+| ------------------------------------- | -------------------------------------------------------------------------------------------- |
+| `unifiedStorage`                      | SQL-based k8s storage                                                                        |
+| `externalServiceAuth`                 | Starts an OAuth2 authentication provider for external services                               |
+| `grafanaAPIServerEnsureKubectlAccess` | Start an additional https handler and write kubectl options                                  |
+| `idForwarding`                        | Generate signed id token for identity that can be forwarded to plugins and external services |
+| `externalServiceAccounts`             | Automatic service account and token setup for plugins                                        |
+| `panelTitleSearchInV1`                | Enable searching for dashboards using panel title in search v1                               |
+| `ssoSettingsApi`                      | Enables the SSO settings API                                                                 |