feat: add metadata to the release (#4714)

this will create a metadata artifact and allow to add them to the
release.

closes #4669
closes #4682

---------

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

www/docs/customization/artifactory.md

@@ -196,6 +196,11 @@ artifactories:
     # Upload checksums.
     checksum: true
 
+    # Upload metadata.json and artifacts.json.
+    #
+    # Since: v1.25
+    meta: true
+
     # Upload signatures.
     signature: true
 

www/docs/customization/publishers.md

@@ -108,6 +108,11 @@ publishers:
     # Publish checksums.
     checksum: true
 
+    # Upload metadata.json and artifacts.json.
+    #
+    # Since: v1.25
+    meta: true
+
     # Publish signatures.
     signature: true
 

www/docs/customization/release.md

@@ -203,6 +203,12 @@ release:
   templated_extra_files:
     - src: LICENSE.tpl
       dst: LICENSE.txt
+
+  # Upload metadata.json and artifacts.json to the release as well.
+  #
+  # Since: v1.25
+  include_meta: true
+
 ```
 
 !!! tip

www/docs/customization/upload.md

@@ -223,6 +223,11 @@ uploads:
     # Upload checksums.
     checksum: true
 
+    # Upload metadata.json and artifacts.json.
+    #
+    # Since: v1.25
+    meta: true
+
     # Upload signatures.
     signature: true