Replace pkger with embed.FS compatibility

kyaml/fn/framework/parser/doc.go

@@ -0,0 +1,43 @@
+// Copyright 2021 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+// Package parser contains implementations of the framework.TemplateParser and framework.SchemaParser interfaces.
+// Typically, you would use these in a framework.TemplateProcessor.
+//
+// Example:
+//
+//	processor := framework.TemplateProcessor{
+//		ResourceTemplates: []framework.ResourceTemplate{{
+//			Templates: parser.TemplateFiles("path/to/templates"),
+//		}},
+//		PatchTemplates: []framework.PatchTemplate{
+//			&framework.ResourcePatchTemplate{
+//				Templates: parser.TemplateFiles("path/to/patches/ingress.template.yaml"),
+//			},
+//		},
+//		AdditionalSchemas: parser.SchemaFiles("path/to/crd-schemas"),
+//	}
+//
+//
+// All the parser in this file are compatible with embed.FS filesystems. To load from an embed.FS
+// instead of local disk, use `.FromFS`. For example, if you embed filesystems as follows:
+//
+// //go:embed resources/* patches/*
+// var templateFS embed.FS
+// //go:embed schemas/*
+// var schemaFS embed.FS
+//
+// Then you can use them like so:
+//
+//	processor := framework.TemplateProcessor{
+//		ResourceTemplates: []framework.ResourceTemplate{{
+//			Templates: parser.TemplateFiles("resources").FromFS(templateFS),
+//		}},
+//		PatchTemplates: []framework.PatchTemplate{
+//			&framework.ResourcePatchTemplate{
+//				Templates: parser.TemplateFiles("patches/ingress.template.yaml").FromFS(templateFS),
+//			},
+//		},
+//		AdditionalSchemas: parser.SchemaFiles("schemas").FromFS(schemaFS),
+//	}
+package parser