feat: add login and registration pages

pkg/nebula/components/login/view.templ

@@ -0,0 +1,21 @@
+package login
+
+import (
+	"github.com/labstack/echo/v4"
+	"github.com/onsonr/sonr/pkg/nebula/components/blocks"
+)
+
+templ View(c echo.Context) {
+	@blocks.Layout("Sonr.ID", true) {
+		@blocks.Card("login-view", blocks.SizeLarge) {
+			@blocks.H1("Sonr.ID")
+			@blocks.Text("Neo-tree is a file manager for NeoFS.")
+			@blocks.Spacer()
+			@blocks.RadioGroup()
+			@blocks.Spacer()
+			@blocks.Button(blocks.GET("/", "#login-view")) {
+				@blocks.Text("Cancel")
+			}
+		}
+	}
+}