Add page settings, improve settings UI

CHDataManagement/Views/Settings/PostFeedSettingsView.swift

@@ -15,7 +15,27 @@ struct PostFeedSettingsView: View {
                     .font(.largeTitle)
                     .bold()
                 Text("Change the way the posts are displayed")
+                    .foregroundStyle(.secondary)
                     .padding(.bottom, 30)
+
+                Text("Content Width")
+                    .font(.headline)
+                IntegerField("", number: $content.settings.posts.contentWidth)
+                    .textFieldStyle(.roundedBorder)
+                    .frame(maxWidth: 400)
+                Text("The maximum width of the content the post feed (in pixels)")
+                    .foregroundStyle(.secondary)
+                    .padding(.bottom)
+
+                Text("Posts Per Page")
+                    .font(.headline)
+                IntegerField("", number: $content.settings.posts.postsPerPage)
+                    .textFieldStyle(.roundedBorder)
+                    .frame(maxWidth: 400)
+                Text("The maximum number of posts displayed on a single page")
+                    .foregroundStyle(.secondary)
+                    .padding(.bottom)
+
                 LocalizedPostFeedSettingsView(settings: content.settings.localized(in: language).posts)
             }
         }