refactor/internal (#1216)

* refactor: update import paths in gateway handlers

* refactor: remove obsolete devtools Makefile and README

* build: optimize build process for improved efficiency

* refactor: remove obsolete pkl files related to Matrix and Sonr network configurations

* refactor: move embed code to x/dwn/types

internal/crypto/core/curves/sp256_curve.go

@@ -0,0 +1,11 @@
+package curves
+
+import (
+	"crypto/elliptic"
+
+	"github.com/dustinxie/ecc"
+)
+
+func SP256() elliptic.Curve {
+	return ecc.P256k1()
+}