feat: allow append list options

tests/testresources/core/ahriman.ini

@@ -60,7 +60,7 @@ target = console
 
 [email]
 host = 127.0.0.1
-link_path =
+link_path = http://example.com
 no_empty_report = no
 port = 587
 receivers = mail@example.com
@@ -72,9 +72,8 @@ templates = ../web/templates
 use_utf = yes
 
 [html]
-path =
-homepage =
-link_path =
+link_path = http://example.com
+path = local/path
 template = repo-index.jinja2
 templates = ../web/templates
 
@@ -82,17 +81,15 @@ templates = ../web/templates
 manual = yes
 
 [rss]
-path =
-homepage =
-link_path =
+link_path = http://example.com
+path = local/path
 template = rss.jinja2
 templates = ../web/templates
 
 [telegram]
-api_key = apikey
+api_key = api_key
 chat_id = @ahrimantestchat
-homepage =
-link_path =
+link_path = http://example.com
 template = telegram-index.jinja2
 templates = ../web/templates
 
@@ -101,20 +98,20 @@ target =
 
 [rsync]
 command = rsync --archive --verbose --compress --partial --delete
-remote =
+remote = remote@example.com
 
 [disabled]
 
 [customs3]
 type = s3
-access_key =
+access_key = access_key
 bucket = bucket
 region = eu-central-1
-secret_key =
+secret_key = secret_key
 
 [github:x86_64]
 owner = arcan1s
-password =
+password = pa55w0rd
 repository = ahriman
 username = arcan1s