added files via upload

Tweaks/FLEX/ViewHierarchy/SnapshotExplorer/FHSViewSnapshot.m

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+//
+//  FHSViewSnapshot.m
+//  FLEX
+//
+//  Created by Tanner Bennett on 1/9/20.
+//  Copyright © 2020 FLEX Team. All rights reserved.
+//
+
+#import "FHSViewSnapshot.h"
+#import "NSArray+FLEX.h"
+
+@implementation FHSViewSnapshot
+
++ (instancetype)snapshotWithView:(FHSView *)view {
+    NSArray *children = [view.children flex_mapped:^id(FHSView *v, NSUInteger idx) {
+        return [self snapshotWithView:v];
+    }];
+    return [[self alloc] initWithView:view children:children];
+}
+
+- (id)initWithView:(FHSView *)view children:(NSArray<FHSViewSnapshot *> *)children {
+    NSParameterAssert(view); NSParameterAssert(children);
+
+    self = [super init];
+    if (self) {
+        _view = view;
+        _title = view.title;
+        _important = view.important;
+        _frame = view.frame;
+        _hidden = view.hidden;
+        _snapshotImage = view.snapshotImage;
+        _children = children;
+        _summary = view.summary;
+    }
+
+    return self;
+}
+
+- (UIColor *)headerColor {
+    if (self.important) {
+        return [UIColor colorWithRed: 0.000 green: 0.533 blue: 1.000 alpha: 0.900];
+    } else {
+        return [UIColor colorWithRed:0.961 green: 0.651 blue: 0.137 alpha: 0.900];
+    }
+}
+
+- (FHSViewSnapshot *)snapshotForView:(UIView *)view {
+    if (view == self.view.view) {
+        return self;
+    }
+
+    for (FHSViewSnapshot *child in self.children) {
+        FHSViewSnapshot *snapshot = [child snapshotForView:view];
+        if (snapshot) {
+            return snapshot;
+        }
+    }
+
+    return nil;
+}
+
+@end