Kindsys: Unify plugins, pfs with kind framework (#61192)

* New pfs impl

* Reached codegen parity with old system

* Update all models.cue inputs

* Rename all models.cue files

* Remove unused prefixfs

* Changes Queries->DataQuery schema interface

* Recodegen

* All tests passing, nearly good now

* Add SchemaInterface to kindsys props

* Add pascal name deriver

* Relocate plugin cue files again

* Clarify use of injected fields

* Remove unnecessary aliasing

* Move DataQuery into mudball

* Allow forcing ExpandReferences on go type generation

* Move DataQuery def into kindsys, add generator to copy it to common

* Fix copy generator to replace package name correctly

* Fix duplicate type, test failure

* Fix linting issues

pkg/codegen/tmpl/plugin_registry.tmpl

@@ -1,31 +0,0 @@
-{{ template "autogen_header.tmpl" .Header -}}
-package corelist
-
-import (
-  "fmt"
-  "io/fs"
-  "sync"
-  "github.com/grafana/grafana"
-	"github.com/grafana/grafana/pkg/plugins/pfs"
-	"github.com/grafana/thema"
-)
-
-func makeTreeOrPanic(path string, pkgname string, rt *thema.Runtime) *pfs.Tree {
-  sub, err := fs.Sub(grafana.CueSchemaFS, path)
-  if err != nil {
-    panic("could not create fs sub to " + path)
-  }
-  tree, err := pfs.ParsePluginFS(sub, rt)
-  if err != nil {
-    panic(fmt.Sprintf("error parsing plugin metadata for %s: %s", pkgname, err))
-  }
-  return tree
-}
-
-func coreTreeList(rt *thema.Runtime) pfs.TreeList{
-  return pfs.TreeList{
-    {{- range .Plugins }}
-    makeTreeOrPanic("{{ .Path }}", "{{ .PkgName }}", rt),
-    {{- end }}
-  }
-}