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/common/http_headers.go

@@ -0,0 +1,52 @@
+package common
+
+import "github.com/labstack/echo/v4"
+
+type HeaderKey string
+
+const (
+	Authorization HeaderKey = "Authorization"
+
+	// User Agent
+	Architecture    HeaderKey = "Sec-CH-UA-Arch"
+	Bitness         HeaderKey = "Sec-CH-UA-Bitness"
+	FullVersionList HeaderKey = "Sec-CH-UA-Full-Version-List"
+	Mobile          HeaderKey = "Sec-CH-UA-Mobile"
+	Model           HeaderKey = "Sec-CH-UA-Model"
+	Platform        HeaderKey = "Sec-CH-UA-Platform"
+	PlatformVersion HeaderKey = "Sec-CH-UA-Platform-Version"
+	UserAgent       HeaderKey = "Sec-CH-UA"
+
+	// Sonr Injected
+	SonrAPIURL  HeaderKey = "X-Sonr-API"
+	SonrgRPCURL HeaderKey = "X-Sonr-GRPC"
+	SonrRPCURL  HeaderKey = "X-Sonr-RPC"
+	SonrWSURL   HeaderKey = "X-Sonr-WS"
+)
+
+func (h HeaderKey) String() string {
+	return string(h)
+}
+
+// ╭───────────────────────────────────────────────────────────╮
+// │                      Utility Methods                      │
+// ╰───────────────────────────────────────────────────────────╯
+
+func HeaderEquals(c echo.Context, key HeaderKey, value string) bool {
+	return c.Response().Header().Get(key.String()) == value
+}
+
+// HeaderExists returns true if the request has the header Key.
+func HeaderExists(c echo.Context, key HeaderKey) bool {
+	return c.Response().Header().Get(key.String()) != ""
+}
+
+// HeaderRead returns the header value for the Key.
+func HeaderRead(c echo.Context, key HeaderKey) string {
+	return c.Response().Header().Get(key.String())
+}
+
+// HeaderWrite sets the header value for the Key.
+func HeaderWrite(c echo.Context, key HeaderKey, value string) {
+	c.Response().Header().Set(key.String(), value)
+}