add migration;add api create employee

internal/entities/phase.go

@@ -0,0 +1,41 @@
+package entities
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type Phase struct {
+	Id        uint      `gorm:"primaryKey"`
+	Name      string    `gorm:"not null"`
+	IsActive  bool      `gorm:"not null;default:true"`
+	Category  string    `gorm:"type:category_code;not null"`
+	CreatedAt time.Time `gorm:"autoCreateTime"`
+
+	Activities []PhaseActivity `gorm:"foreignKey:PhaseId;references:Id"`
+}
+
+type PhaseActivity struct {
+	Id          uint      `gorm:"primaryKey"`
+	PhaseId     uint      `gorm:"not null"`
+	Name        string    `gorm:"not null"`
+	Description *string   `gorm:"type:text"`
+	TimeType    *string   `gorm:"type:text"`
+	CreatedAt   time.Time `gorm:"autoCreateTime"`
+	UpdatedAt   time.Time `gorm:"autoUpdateTime"`
+
+	Phase Phase `gorm:"foreignKey:PhaseId;references:Id"`
+}
+
+type Checklist struct {
+	Id          uint    `gorm:"primaryKey"`
+	Name        string  `gorm:"not null"`
+	Description *string `gorm:"type:text"`
+	PhaseId     *uint
+	CreatedAt   time.Time      `gorm:"autoCreateTime"`
+	UpdatedAt   time.Time      `gorm:"autoUpdateTime"`
+	DeletedAt   gorm.DeletedAt `gorm:"index" json:"-"`
+
+	Phase *Phase `gorm:"foreignKey:PhaseId;references:Id"`
+}