[chore] fix metadata.yaml (#12387)

<!--Ex. Fixing a bug - Describe the bug and how this fixes the issue.
Ex. Adding a feature - Explain what this achieves.-->
#### Description
fix metadata.yaml github_project, add a go:generate instruction to
confmap and a banner to README

confmap/README.md

@@ -1,6 +1,16 @@
-# High Level Design
+# Confmap
 
-This document is work in progress.
+<!-- status autogenerated section -->
+| Status        |           |
+| ------------- |-----------|
+| Stability     | [stable]: logs, metrics, traces   |
+| Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector?query=is%3Aissue%20is%3Aopen%20label%3Apkg%2Fconfmap%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector/issues?q=is%3Aopen+is%3Aissue+label%3Apkg%2Fconfmap) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector?query=is%3Aissue%20is%3Aclosed%20label%3Apkg%2Fconfmap%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector/issues?q=is%3Aclosed+is%3Aissue+label%3Apkg%2Fconfmap) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@mx-psi](https://www.github.com/mx-psi), [@evan-bradley](https://www.github.com/evan-bradley) |
+
+[stable]: https://github.com/open-telemetry/opentelemetry-collector/blob/main/docs/component-stability.md#stable
+<!-- end autogenerated section -->
+
+# High Level Design
 
 ## Conf
 

confmap/confmap.go

@@ -1,6 +1,8 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
+//go:generate mdatagen metadata.yaml
+
 package confmap // import "go.opentelemetry.io/collector/confmap"
 
 import (

confmap/generated_package_test.go

@@ -1,5 +1,4 @@
-// Copyright The OpenTelemetry Authors
-// SPDX-License-Identifier: Apache-2.0
+// Code generated by mdatagen. DO NOT EDIT.
 
 package confmap
 

confmap/metadata.yaml

@@ -1,8 +1,11 @@
-type: nop
+type: confmap
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   codeowners:
     active:
       - mx-psi
       - evan-bradley
-  class: confmap
+  class: pkg
+  stability:
+    stable: [logs, metrics, traces]

connector/xconnector/metadata.yaml

@@ -1,4 +1,5 @@
 type: xconnector
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: connector

consumer/xconsumer/metadata.yaml

@@ -1,4 +1,5 @@
 type: xconsumer
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: consumer

docs/rfcs/metadata.yaml

@@ -1,4 +1,5 @@
 type: rfcs
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: docs

exporter/exporterhelper/xexporterhelper/metadata.yaml

@@ -1,4 +1,5 @@
 type: xexporterhelper
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: exporter

exporter/xexporter/metadata.yaml

@@ -1,4 +1,5 @@
 type: xexporter
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: exporter

extension/xextension/metadata.yaml

@@ -1,4 +1,5 @@
 type: xextension
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: extension

pdata/pprofile/metadata.yaml

@@ -1,4 +1,5 @@
 type: pprofile
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: pdata

processor/processorhelper/metadata.yaml

@@ -1,4 +1,5 @@
 type: processorhelper
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: processor

processor/xprocessor/metadata.yaml

@@ -1,4 +1,5 @@
 type: xprocessor
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: processor

receiver/xreceiver/metadata.yaml

@@ -1,4 +1,5 @@
 type: xreceiver
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: receiver

service/internal/graph/metadata.yaml

@@ -1,4 +1,5 @@
 type: graph
+github_project: open-telemetry/opentelemetry-collector
 
 status:
   class: service