feat: add algorithm interpolation

JournalDeBord.md

documentation.md

documentation.pdf

...in/java/com/example/testapi/controller/ApiController.java

...pi/src/main/java/com/example/testapi/model/DateRange.java

...n/java/com/example/testapi/service/SimulateurService.java

...Api/src/main/java/com/example/testapi/service/Ticker.java

testApi/src/main/resources/application.properties