Reorganized API + added db migrations

Read the README file for more informations

backend/api/events/new.go

@@ -0,0 +1,36 @@
+package events
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+
+	core "fr.latosa-escrima/api/core"
+)
+
+func HandleNew(w http.ResponseWriter, r *http.Request) {
+	var event core.Event
+	err := json.NewDecoder(r.Body).Decode(&event)
+	if err != nil {
+		core.JSONError{
+			Status:  core.Error,
+			Message: err.Error(),
+		}.Respond(w, http.StatusBadRequest)
+		return
+	}
+
+	_, err = core.DB.NewInsert().Model(&event).Exec(context.Background())
+	if err != nil {
+		core.JSONError{
+			Status:  core.Error,
+			Message: err.Error(),
+		}.Respond(w, http.StatusNotAcceptable)
+		return
+	}
+
+	core.JSONSuccess{
+		Status:  core.Success,
+		Message: "Event created",
+		Data:    event,
+	}.Respond(w, http.StatusCreated)
+}