Remote call trigger support (#105)

* add support of remote task tracking
* add remote call trigger implementation
* docs update
* add cross-service upload
* add notes about user
* add more ability to control upload
* multipart upload with signatures as well as safe file save
* configuration reference update
* rename watcher methods
* erase logs based on current package version

Old implementation has used process id instead, but it leads to log
removal in case of remote process trigger

* add --server flag for setup command
* restore behavior of the httploghandler

tests/testresources/core/ahriman.ini

@@ -74,6 +74,9 @@ homepage =
 link_path =
 template_path = ../web/templates/repo-index.jinja2
 
+[remote-call]
+manual = yes
+
 [telegram]
 api_key = apikey
 chat_id = @ahrimantestchat
@@ -103,10 +106,13 @@ password =
 repository = ahriman
 username = arcan1s
 
+[remote-service]
+
 [web]
 debug = no
 debug_check_host = no
 debug_allowed_hosts =
+enable_archive_upload = yes
 host = 127.0.0.1
 static_path = ../web/templates/static
 templates = ../web/templates