docs(web-app): add first puml diagram

docs/class-diagram-web-app.puml

@@ -0,0 +1,66 @@
+@startuml web-app
+
+skinparam linetype ortho
+
+class App {
+' principale vuejs component
+
+}
+
+class Client {
+    +getValues()
+    +getNewValue()
+}
+
+class SeriesManager {
+' get data, put data in graphs, ask new measure
+
+    +getNewValue()
+    +getAllValue()
+}
+
+class SerieConverter {
+' convert timeseries from backend for graphs
+    +jsonToSerie()
+}
+
+class TimeSeries {
+' simplify the duplication of series in graphs
+    -Series
+
+}
+
+class Button {
+' vue js component
+' ask new measure
+
+}
+
+class Serie {
+' contains table of measure
+' convert the table to graphs format
+    -type
+    -values
+    -numberOfLastValus
+    -id
+    -place
+    -name
+
+    +getGraphFormat()
+    ' needs to limit the number of value
+    +addNewValue() 
+}
+
+class Plot {
+
+}
+
+App *-r- SeriesManager
+App *-u- Client
+SeriesManager *-r- TimeSeries
+Plot -l-* TimeSeries
+Serie -u-* TimeSeries
+Serie *-- Button
+SerieConverter .u.> SeriesManager 
+
+@enduml