Implement basic food service

types.go

@@ -3,21 +3,7 @@ package main
 import "time"
 
 type (
-	Food struct {
-		rowid      int
-		date       time.Time
-		food       string
-		descripton string
-		amount     float32
-		per100     float32
-		energy     float32
-	}
-	AggregatedFood struct {
-		period    string
-		amount    float32
-		avgPer100 float32
-		energy    float32
-	}
+
 	Weight struct {
 		rowid  int
 		date   time.Time