Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

envd/internal/shared/utils/ptr.go

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package utils
+
+import "fmt"
+
+func ToPtr[T any](v T) *T {
+	return &v
+}
+
+func FromPtr[T any](s *T) T {
+	if s == nil {
+		var zero T
+
+		return zero
+	}
+
+	return *s
+}
+
+func Sprintp[T any](s *T) string {
+	if s == nil {
+		return "<nil>"
+	}
+
+	return fmt.Sprintf("%v", *s)
+}
+
+func DerefOrDefault[T any](s *T, defaultValue T) T {
+	if s == nil {
+		return defaultValue
+	}
+
+	return *s
+}
+
+func CastPtr[S any, T any](s *S, castFunc func(S) T) *T {
+	if s == nil {
+		return nil
+	}
+
+	t := castFunc(*s)
+
+	return &t
+}