Overhaul [1/n]

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/api/unit/unit.go

@@ -0,0 +1,25 @@
+package unit
+
+import (
+	"fmt"
+
+	"github.com/gin-gonic/gin"
+)
+
+func UnitApi(ctx *gin.Context, action string) (res any, err error) {
+	switch action {
+	case "accessoryAll":
+		res, err = unitAccessoryAll(ctx)
+	case "deckInfo":
+		res, err = unitDeckInfo(ctx)
+	case "removableSkillInfo":
+		res, err = unitRemovableSkillInfo(ctx)
+	case "supporterAll":
+		res, err = unitSupporterAll()
+	case "unitAll":
+		res, err = unitAll(ctx)
+	default:
+		err = fmt.Errorf("unimplemented action: unit: %s", action)
+	}
+	return res, err
+}