added files via upload

Tweaks/FLEX/Network/FLEXMITMDataSource.h

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+//
+//  FLEXMITMDataSource.h
+//  FLEX
+//
+//  Created by Tanner Bennett on 8/22/21.
+//
+
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FLEXMITMDataSource<__covariant TransactionType> : NSObject
+
++ (instancetype)dataSourceWithProvider:(NSArray<TransactionType> *(^)(void))future;
+
+/// Whether or not the data in \c transactions and \c bytesReceived are actually filtered yet or not
+@property (nonatomic, readonly) BOOL isFiltered;
+
+/// The content of this array is filtered to match the input of \c filter:completion:
+@property (nonatomic, readonly) NSArray<TransactionType> *transactions;
+@property (nonatomic, readonly) NSArray<TransactionType> *allTransactions;
+
+/// The content of this array is filtered to match the input of \c filter:completion:
+@property (nonatomic) NSInteger bytesReceived;
+@property (nonatomic) NSInteger totalBytesReceived;
+
+- (void)reloadByteCounts;
+- (void)reloadData:(void (^_Nullable)(FLEXMITMDataSource *dataSource))completion;
+- (void)filter:(NSString *)searchString completion:(void(^_Nullable)(FLEXMITMDataSource *dataSource))completion;
+
+@end
+
+NS_ASSUME_NONNULL_END