Move darkstorm_backend to just backend

Added MongoDB instances of DB tables
Updated some DB interfaces
Added logging to count cleanup

internal/backend/db.go

@@ -0,0 +1,38 @@
+package backend
+
+import "errors"
+
+var (
+	ErrNotFound = errors.New("no matches found in table")
+)
+
+type IDStruct interface {
+	GetID() string
+}
+
+type Table[T IDStruct] interface {
+	Get(ID string) (data *T, err error)
+	Find(values map[string]any) ([]T, error)
+	Insert(data T) error
+	Remove(ID string) error
+	FullUpdate(ID string, data T) error
+	PartUpdate(ID string, update map[string]any) error
+}
+
+type CountTable interface {
+	Table[CountLog]
+	// Remove all Log items that have a CountLog.Date value less then the given value.
+	RemoveOldLogs(date int) error
+	// Get count. If platform is an empty string or "all", the full count should be given
+	Count(platform string) (int, error)
+}
+
+type CrashTable interface {
+	Table[CrashReport]
+	// Move a crash type to archive. Crashes that match the archived crash will be automatically removed from the CrashTable.
+	Archive(ArchivedCrash) error
+	IsArchived(IndividualCrash) bool
+	// Add the IndividualCrash report to the crash table. If a CrashReport exists that matches, then it gets added to CrashReport.Individual.
+	// If an IndividualCrash exists that is a perfect match, Count is incremented instead of adding it to the array.
+	InsertCrash(IndividualCrash) error
+}