added documentation describing the process of importing a server config

- added documentation describing the processing of the server config when trying to open a VPN connection
- added documentation describing config for wireguard

.gitignore

@@ -127,3 +127,6 @@ captures/
 # Android Profiling
 *.hprof
 client/3rd/ShadowSocks/ss_ios.xcconfig
+
+# UML generated pics
+out/

docs/README.md

@@ -0,0 +1,3 @@
+To convert the text description of the chart into an image, you can use:
+* Any online service, just google plantuml online
+* Install plugin for vscode - PlantUML

docs/configs/serverConfigImportProcess.plantuml

@@ -0,0 +1,23 @@
+@startuml serverConfigImportProcess
+start
+
+:import server config in any format;
+:decode server config into json;
+
+if (server config contains valid server credentials || containers) then (yes)
+    :show json server config to user;
+    if (user clicked continue import) then (yes)
+        :append server config to app internal settings;
+    else (no)
+        :do nothing;
+    endif
+else (no)
+    :show error;
+    note right
+        now only output to the log
+    end note
+    stop
+endif
+
+stop
+@enduml

docs/configs/serverConfigProcessingOnConnection.plantuml

@@ -0,0 +1,20 @@
+@startuml configProcessingOnConnection
+start
+
+:connect button clicked;
+:createVpnConfiguration();
+:createVpnConfigurationForProto();
+
+if (serverConfig.contains(lastConfigStorage)) then (yes)
+    :download native config from lastConfigStorage;
+else if (serverConfig.contains(last_config)) then (yes)
+    :do nothing special;
+else if (serverConfig.contains(admin credentials)) then (yes)
+    :generate new native config;
+else 
+    :return empty config and error;
+    stop
+endif
+:continue connect process;
+stop
+@enduml

docs/configs/wireguard/amneziaWireGuardAdminConfigV1.plantuml

@@ -0,0 +1,20 @@
+@startjson
+{
+   "containers : array": 
+        {
+            "container : string": "amnezia-wireguard",
+            "wireguard : array": 
+                {
+                    "last_config : string": "native wireguard config",
+                    "port : string": "port number",
+                    "transport_proto : string": "udp"
+                }
+        },
+    "defaultContainer : string": "amnezia-wireguard",
+    "description : string": "server name alias",
+    "hostName : string": "server address",
+    "password : string": "password for user",
+    "port : string": "port number",
+    "userName : string": "user for ssh connection"
+}
+@endjson

docs/configs/wireguard/amneziaWireGuardClientConfigV1.plantuml

@@ -0,0 +1,20 @@
+@startjson
+{
+   "containers : array": 
+        {
+            "container : string": "amnezia-wireguard",
+            "wireguard : array": 
+                {
+                    "isThirdPartyConfig : bool": "depends on import source",
+                    "last_config : string": "native wireguard config",
+                    "port : string": "port number",
+                    "transport_proto : string": "udp"
+                }
+        },
+    "defaultContainer : string": "amnezia-wireguard",
+    "description : string": "server name alias",
+    "dns1 : string": "dns address",
+    "dns2 : string": "dns address",
+    "hostName : string": "server address"
+}
+@endjson

docs/configs/wireguard/amneziaWireGuardClientConfigV2.plantuml

@@ -0,0 +1,22 @@
+@startjson
+{
+   "containers : array": 
+        {
+            "container : string": "amnezia-wireguard",
+            "wireguard : array": 
+                {
+                    "isThirdPartyConfig : bool": "depends on import source",
+                    "last_config : string": "native wireguard config",
+                    "port : string": "port number",
+                    "transport_proto : string": "udp"
+                }
+        },
+    "defaultContainer : string": "amnezia-wireguard",
+    "description : string": "server name alias",
+    "dns1 : string": "dns address",
+    "dns2 : string": "dns address",
+    "hostName : string": "server address",
+    "version : number": "2",
+    "lastConfigStorage : string": "storage address"
+}
+@endjson