docs: add frontmatter metadata required for Docusaurus migration (cloudnative-pg#9109)

This commit adds the frontmatter needed for the Docusaurus migration to
all Markdown files under `docs/src`:

- For main documentation files (`docs/src/*.md`): added `id`, `title`,
  and `sidebar_position` based on the ordering in `sidebar.js`.
- For release notes (`docs/src/release_notes/**/*.md`): added `id` and
  `title` to all files, including those in the `old/` directory.

Closes cloudnative-pg#9059
See also cloudnative-pg#8122

Signed-off-by: Gabriele Bartolini <gabriele.bartolini@enterprisedb.com>
Signed-off-by: Anushka Saxena <anushkasaxena.1947@gmail.com>
Co-authored-by: Gabriele Bartolini <gabriele.bartolini@enterprisedb.com>

Author: SaxenaAnushka102

.wordlist-en-custom.txt

@@ -934,6 +934,7 @@ imagePullPolicy
 imagePullSecrets
 imageVolume
 imagecatalogs
+imagevolume
 img
 immediateCheckpoint
 impactful

docs/src/appendixes/backup_barmanobjectstore.md

@@ -1,3 +1,8 @@
+---
+id: backup_barmanobjectstore
+title: Appendix B - Backup on object stores
+---
+
 # Appendix B - Backup on object stores
 
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->

docs/src/appendixes/backup_volumesnapshot.md

@@ -1,3 +1,8 @@
+---
+id: backup_volumesnapshot
+title: Appendix A - Backup on volume snapshots
+---
+
 # Appendix A - Backup on volume snapshots
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/appendixes/object_stores.md

@@ -1,3 +1,8 @@
+---
+id: object_stores
+title: Appendix C - Common object stores for backups
+---
+
 # Appendix C - Common object stores for backups
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/applications.md

@@ -1,3 +1,9 @@
+---
+id: applications
+sidebar_position: 340
+title: Connecting from an application
+---
+
 # Connecting from an application
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/architecture.md

@@ -1,3 +1,9 @@
+---
+id: architecture
+sidebar_position: 40
+title: Architecture
+---
+
 # Architecture
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/backup.md

@@ -1,3 +1,9 @@
+---
+id: backup
+sidebar_position: 180
+title: Backup
+---
+
 # Backup
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/backup_recovery.md

@@ -1,3 +1,8 @@
+---
+id: backup_recovery
+title: Backup and Recovery
+---
+
 # Backup and Recovery
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 

docs/src/before_you_start.md

@@ -1,4 +1,10 @@
-# Before You Start
+---
+id: before_you_start
+sidebar_position: 20
+title: Before you start
+---
+
+# Before you start
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->
 
 Before we get started, it is essential to go over some terminology that is

docs/src/benchmarking.md

@@ -1,3 +1,9 @@
+---
+id: benchmarking
+sidebar_position: 530
+title: Benchmarking
+---
+
 # Benchmarking
 <!-- SPDX-License-Identifier: CC-BY-4.0 -->