(lab 5) feat: add Conditional Traversal approach

lab 5/ConditionalTraversal/ConditionalTraversal.fsproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Program.fs" />
+  </ItemGroup>
+
+</Project>

lab 5/ConditionalTraversal/Program.fs

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+// For more information see https://aka.ms/fsharp-console-apps
+printfn "Hello from F#"
+
+// f - operator
+// init - initial value
+// predicate - filter condition
+let rec traverseNumberWithCondition' n f init predicate =
+    match n with
+    | 0 -> init
+    | n -> 
+        let digit = n % 10
+        let newAcc = 
+            match predicate digit with
+            | true -> f init digit
+            | false -> init
+        traverseNumberWithCondition' (n / 10) f newAcc predicate
+
+let traverseNumberWithCondition n f init predicate = 
+    traverseNumberWithCondition' n f init predicate
+
+[<EntryPoint>]
+let main argv =
+    System.Console.WriteLine("Введите число:")
+    let number = System.Console.ReadLine() |> int
+    
+    // Сумма четных цифр
+    let isEven x = x % 2 = 0
+    let sumEven = traverseNumberWithCondition number (fun x y -> x + y) 0 isEven
+    System.Console.WriteLine($"Сумма четных цифр: {sumEven}")
+    
+    // Произведение нечетных цифр
+    let isOdd x = x % 2 <> 0
+    let mulOdd = traverseNumberWithCondition number (fun x y -> x * y) 1 isOdd
+    System.Console.WriteLine($"Произведение нечетных цифр: {mulOdd}")
+    
+    // Максимальная цифра, большая 5
+    let isGreaterThan5 x = x > 5
+    let maxGreater5 = traverseNumberWithCondition number (fun x y -> max x y) 0 isGreaterThan5
+    System.Console.WriteLine($"Максимальная цифра > 5: {maxGreater5}")
+    
+    // Минимальная цифра из цифр, делящихся на 3
+    let isDivisibleBy3 x = x > 0 && x % 3 = 0
+    let minDivBy3 = traverseNumberWithCondition number (fun x y -> min x y) System.Int32.MaxValue isDivisibleBy3
+    System.Console.WriteLine($"Минимальная цифра, делящаяся на 3: {minDivBy3}")
+    
+    0