Scuemata: Add test to validate devenv resources (#35810)

* Add test for devenv resources

* Refactor validation tests for grokkability

* Devenv dashboards error-tracking script

* Refactor to use cueerrors.Details()

* Further test refinement

* Close major elements of dashboard schema

* Centralize dashboard validation tests

General dashboard validation testing belongs in the load package.

* Better names for error context on glue CUE code

* Fixup validate-resource

Do only one of base or dist, and fix copied docs.

* Skip the devenv test

* Remove test for validateResources

* Fix shellcheck

* Backend linter

Co-authored-by: sam boyer <sdboyer@grafana.com>

scripts/validate-devenv-dashboards.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Temporary - remove this script once the dashboard schema are mature
+
+# Remove the appropriate ellipses from the schema to check for unspecified
+# fields in the artifacts (validating "open")
+
+# Run from root of grafana repo
+CMD=${CLI:-bin/darwin-amd64/grafana-cli}
+FILES=$(grep -rl '"schemaVersion": 30' devenv)
+for DASH in ${FILES}; do echo "${DASH}"; ${CMD} cue validate-resource --dashboard "${DASH}"; done