Update Ghostgram features

Swiftgram/SGTabBarHeightModifier/BUILD

@@ -0,0 +1,9 @@
+filegroup(
+    name = "SGTabBarHeightModifier",
+    srcs = glob([
+        "Sources/**/*.swift",
+    ]),
+    visibility = [
+        "//visibility:public",
+    ],
+)

Swiftgram/SGTabBarHeightModifier/Sources/SGTabBarHeightModifier.swift

@@ -0,0 +1,27 @@
+import Foundation
+import Display
+import SGSimpleSettings
+
+public func sgTabBarHeightModifier(tabBarHeight: CGFloat, layout: ContainerViewLayout, defaultBarSmaller: Bool) -> CGFloat {
+    var tabBarHeight = tabBarHeight
+    guard !SGSimpleSettings.shared.showTabNames else {
+        return tabBarHeight
+    }
+    
+    if defaultBarSmaller {
+        tabBarHeight -= 6.0
+    } else {
+        tabBarHeight -= 12.0
+    }
+    
+    if layout.intrinsicInsets.bottom.isZero {
+        // Devices with home button need a bit more space
+        if defaultBarSmaller {
+            tabBarHeight += 3.0
+        } else {
+            tabBarHeight += 6.0
+        }
+    }
+    
+    return tabBarHeight
+}