[#3005] feat(leetcode): init project, add C# solution

problems/3005-count_elements_with_maximum_frequency/test/SolutionTests.cs

@@ -0,0 +1,24 @@
+// LeetCode 3005 單元測試（xUnit）
+
+using Xunit;
+
+public class SolutionTests {
+    private readonly Solution _s = new Solution();
+
+    [Fact]
+    public void Example1() {
+        // TODO: Arrange
+        // var input = new int[] { };
+        // var expected = 0;
+        // Act
+        // var got = _s.Solve(input);
+        // Assert.Equal(expected, got);
+        Assert.True(true);
+    }
+
+    [Fact]
+    public void EdgeCases() {
+        Assert.True(true);
+    }
+}
+

problems/3005-count_elements_with_maximum_frequency/test/TestProject.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="../csharp/csharp.csproj" />
+  </ItemGroup>
+</Project>
+

problems/3005-count_elements_with_maximum_frequency/test/main_test.go

@@ -0,0 +1,12 @@
+// LeetCode 3005 單元測試（Go testing）
+package main
+
+import "testing"
+
+func TestExample(t *testing.T) {
+    // TODO: input := []int{}
+    // got := solve(input)
+    // want := 0
+    // if got != want { t.Fatalf("want %v got %v", want, got) }
+}
+