components: make GradientButtonStyle padding configurable

There is too much padding on the follow hashtag button so we need to fix
that

damus/Components/GradientButtonStyle.swift

@@ -8,9 +8,15 @@
 import SwiftUI
 
 struct GradientButtonStyle: ButtonStyle {
+    let padding: CGFloat
+
+    init(padding: CGFloat = 16.0) {
+        self.padding = padding
+    }
+
     func makeBody(configuration: Self.Configuration) -> some View {
         return configuration.label
-            .padding()
+            .padding(padding)
             .foregroundColor(Color.white)
             .background {
                 RoundedRectangle(cornerRadius: 12)