feat: TLS support for web (#301)

* Added TLS support for web

- Added optional configurations `cert_file` and `key_file` to run web server with https

Signed-off-by: Dmytro Bondar <git@bonddim.com>

* Helm chart update

- Refactored Ingress to use one host only (`config.web.external_url` is required)
- Added Certificate resource template (secret is mounted to container into `/app/certs/`)
- Added support for service with mixed protocols (exposes UI and Wireguard ports on same IP)
- Added helm-docs target to makefile
- Changed pod labels to use selectorLabels
- Removed default probes (app runs without healthy web)
- Removed sections from README

Signed-off-by: Dmytro Bondar <git@bonddim.com>

* Fix chart workflow path filter

* Fix chart lint issue

* Skip clean-up tested chart

* Try k3d cluster

---------

Signed-off-by: Dmytro Bondar <git@bonddim.com>

deploy/helm/templates/_helpers.tpl

@@ -98,3 +98,12 @@ resources:
   requests:
     storage: {{ .Values.persistence.size | quote }}
 {{- end -}}
+
+{{/*
+Define hostname
+*/}}
+{{- define "wg-portal.hostname" -}}
+{{- if .Values.config.web.external_url -}}
+  {{- (urlParse (tpl .Values.config.web.external_url .)).hostname -}}
+{{- end -}}
+{{- end -}}