feat: Add support for hostAliases (#401) (#97)

picked from upstream

- https://gitea.com/gitea/helm-chart/pulls/401

Co-authored-by: podain77 <podain77@noreply.gitea.io>
Reviewed-on: https://codeberg.org/forgejo-contrib/forgejo-helm/pulls/97

values.yaml

@@ -6,6 +6,7 @@
 ## @param global.imageRegistry global image registry override
 ## @param global.imagePullSecrets global image pull secrets override; can be extended by `imagePullSecrets`
 ## @param global.storageClass global storage class override
+## @param global.hostAliases global hostAliases which will be added to the pod's hosts files
 global:
   imageRegistry: ""
   ## E.g.
@@ -14,6 +15,10 @@ global:
   ##
   imagePullSecrets: []
   storageClass: ""
+  hostAliases: []
+  # - ip: 192.168.137.2
+  #   hostnames:
+  #   - example.com
 
 ## @param replicaCount number of replicas for the statefulset
 replicaCount: 1