Update project structure and build process

libwallet/publickey.go

@@ -0,0 +1,20 @@
+package libwallet
+
+import (
+	"fmt"
+
+	"github.com/btcsuite/btcd/btcec"
+)
+
+type PublicKey struct {
+	key *btcec.PublicKey
+}
+
+func NewPublicKeyFromBytes(bytes []byte) (*PublicKey, error) {
+	key, err := btcec.ParsePubKey(bytes, btcec.S256())
+	if err != nil {
+		return nil, fmt.Errorf("NewPublicKeyFromBytes: failed to parse pub key: %w", err)
+	}
+
+	return &PublicKey{key}, nil
+}