Reorganize Rally code

The Cards file had a bunch of stuff, split it up per-screen so it
is easier to find what is used where

Also remove the Rally* prefix from most places as it makes things harder
to read.

Bug: 130636326
Test: run & visual check
Change-Id: I60a865042bcf1ba8f052fb0c78899d369bc1bfb0

diff --git a/ui/ui-material/integration-tests/material-studies/src/main/java/androidx/ui/material/studies/rally/Icons.kt b/ui/ui-material/integration-tests/material-studies/src/main/java/androidx/ui/material/studies/rally/Icons.kt
new file mode 100644
index 0000000..3c45637
--- /dev/null
+++ b/ui/ui-material/integration-tests/material-studies/src/main/java/androidx/ui/material/studies/rally/Icons.kt

@@ -0,0 +1,60 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.ui.material.studies.rally
+
+import androidx.compose.Composable
+import androidx.ui.core.Modifier
+import androidx.ui.foundation.Box
+import androidx.ui.foundation.Clickable
+import androidx.ui.graphics.Color
+import androidx.ui.graphics.vector.DrawVector
+import androidx.ui.graphics.vector.VectorAsset
+import androidx.ui.layout.LayoutHeight
+import androidx.ui.layout.LayoutWidth
+import androidx.ui.material.ripple.Ripple
+import androidx.ui.unit.dp
+
+/**
+ * A button made with a 24x24dp icon
+ */
+@Composable
+fun IconButton(
+    vectorImage: VectorAsset,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier.None
+) {
+    Box(modifier = modifier) {
+        Ripple(bounded = false) {
+            Clickable(onClick) {
+                Icon(vectorImage)
+            }
+        }
+    }
+}
+
+/**
+ * 24x24dp icon from a resource id.
+ */
+@Composable
+fun Icon(vectorImage: VectorAsset, tintColor: Color = Color.White) {
+    Box(modifier = LayoutHeight(24.dp) + LayoutWidth(24.dp)) {
+        DrawVector(
+            vectorImage = vectorImage,
+            tintColor = tintColor
+        )
+    }
+}
\ No newline at end of file