Schema: get all devenv dashboards passing validation (#37857)

* Strip nulls (again)

* Add stripnulls script

* Add transformations field

* Close FieldConfig struct; proper plugin validating

* s/graph/viz/ field in histogram dashboard

* Use ui.GraphFieldConfig in histogram model

* Add models for stat, gauge, barguage panel plugins

Also toss necessary shared types into cue/ui/gen.cue, with TODOs to move
them appropriately later.

* Add required license headers

* Heap of updates to cue UI components

* Fix barchart types and one old devenv input

* Use the GraphFieldConfig directly for timeseries

* Add models.cue for a few panel plugins

Barchart, state-timeline, and status-history

* Enable the test validating all devenv dashboards!!

* Fix effects of not checking after making comments

* Update packages/grafana-ui/src/options/models.gen.ts

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

* Realign and unalign cue with ts types

* Update devenv test to sniff for null errors

Best option we have right now for helping people to know they need to
strip nulls from devenv dashboards.

* Add speculative default for barchart stacking

* Fixup some dated devenv dashboards

timeline-modes needed to be regenerated with the appropriate tooltip
values included, per typing requirements, and timeline-demo needed to
have the `mode` field removed, as it is not intended to be persisted.

* Add necessary missing options for various panels

* Regenerate devenv dashboards

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

public/app/plugins/panel/histogram/models.cue

@@ -1,16 +1,36 @@
+// Copyright 2021 Grafana Labs
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package grafanaschema
 
+import ui "github.com/grafana/grafana/cue/ui:grafanaschema"
+
 Family: {
     lineages: [
         [
             {
                 PanelOptions: {
+                    ui.OptionsWithLegend
+                    ui.OptionsWithTooltip
                     bucketSize?: int
                     bucketOffset: int | *0
                     combine?: bool
                 }
 
-                // TODO: FieldConfig
+                PanelFieldConfig: {
+                    ui.GraphFieldConfig
+                }
             }
         ]
     ]