schema: Migrate from scuemata to thema (#49805)

* Remove crufty scuemata bits

Buhbye to: cue/ dir with old definitions, CI steps for checking unnecessary
things, and the original dashboard scuemata file.

* Remove grafana-cli cue subcommand

* Remove old testdata

* Don't swallow errors from codegen

* Small nits and tweaks to cuectx package

* WIP - refactor pluggen to use Thema

Also consolidate the embed.FS in the repo root.

* Finish halfway rename

* Convert all panel models.cue to thema

* Rewrite pluggen to use Thema

* Remove pkg/schema, and trim command

* Remove schemaloader service and usages

Will be replaced by coremodel-centric hydrate/dehydrate system Soon™.

* Remove schemaloader from wire

* Remove hangover field on histogram models.cue

* Fix lint errors, some vestiges of trim service

* Remove unused cuetsify cli command

pkg/cmd/grafana-cli/commands/commands.go

@@ -100,12 +100,6 @@ func runPluginCommand(command func(commandLine utils.CommandLine) error) func(co
 	}
 }
 
-func runCueCommand(command func(commandLine utils.CommandLine) error) func(context *cli.Context) error {
-	return func(context *cli.Context) error {
-		return command(&utils.ContextCommandLine{Context: context})
-	}
-}
-
 // Command contains command state.
 type Command struct {
 	Client utils.ApiClient
@@ -197,74 +191,6 @@ var adminCommands = []*cli.Command{
 	},
 }
 
-var cueCommands = []*cli.Command{
-	{
-		Name:   "validate-schema",
-		Usage:  "validate known *.cue files in the Grafana project",
-		Action: runCueCommand(cmd.validateScuemata),
-		Description: `validate-schema checks that all CUE schema files are valid with respect
-to basic standards - valid CUE, valid scuemata, etc. Note that this
-command checks only paths that existed when grafana-cli was compiled,
-so must be recompiled to validate newly-added CUE files.`,
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:  "grafana-root",
-				Usage: "path to the root of a Grafana repository to validate",
-			},
-		},
-	},
-	{
-		Name:   "validate-resource",
-		Usage:  "validate resource files (e.g. dashboard JSON) against schema",
-		Action: runCueCommand(cmd.validateResources),
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:  "dashboard",
-				Usage: "dashboard JSON file to validate",
-			},
-			&cli.BoolFlag{
-				Name:  "base-only",
-				Usage: "validate using only base schema, not dist (includes plugin schema)",
-				Value: false,
-			},
-		},
-	},
-	{
-		Name:   "trim-resource",
-		Usage:  "trim schema-specified defaults from a resource",
-		Action: runCueCommand(cmd.trimResource),
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:  "dashboard",
-				Usage: "path to file containing (valid) dashboard JSON",
-			},
-			&cli.BoolFlag{
-				Name:  "apply",
-				Usage: "invert the operation: apply defaults instead of trimming them",
-				Value: false,
-			},
-		},
-	},
-	{
-		Name:  "gen-ts",
-		Usage: "generate TypeScript from all known CUE file types",
-		Description: `gen-ts generates TypeScript from all CUE files at
-		expected positions in the filesystem tree of a Grafana repository.`,
-		Action: runCueCommand(cmd.generateTypescript),
-		Flags: []cli.Flag{
-			&cli.StringFlag{
-				Name:  "grafana-root",
-				Usage: "path to the root of a Grafana repository in which to generate TypeScript from CUE files",
-			},
-			&cli.BoolFlag{
-				Name:  "diff",
-				Usage: "diff results of codegen against files already on disk. Exits 1 if diff is non-empty",
-				Value: false,
-			},
-		},
-	},
-}
-
 var Commands = []*cli.Command{
 	{
 		Name:        "plugins",
@@ -276,9 +202,4 @@ var Commands = []*cli.Command{
 		Usage:       "Grafana admin commands",
 		Subcommands: adminCommands,
 	},
-	{
-		Name:        "cue",
-		Usage:       "Cue validation commands",
-		Subcommands: cueCommands,
-	},
 }