Initialize solution structure

src/Directory.Build.props

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+<Project>
+  <PropertyGroup>
+    <Nullable>enable</Nullable>
+    <NrtRevisionFormat>{semvertag:main}{!:-dev}</NrtRevisionFormat>
+    <AssemblyOriginatorKeyFile>../../FritzCallMonitor.snk</AssemblyOriginatorKeyFile>
+
+    <AppendTargetFrameworkToOutputPath>true</AppendTargetFrameworkToOutputPath>
+    <CopyRefAssembliesToPublishDirectory>false</CopyRefAssembliesToPublishDirectory>
+    <GenerateDocumentationFile>true</GenerateDocumentationFile>
+
+    <RepositoryType>git</RepositoryType>
+    <RepositoryUrl>https://github.com/AM-WD/FritzCallMonitor.git</RepositoryUrl>
+    <PublishRepositoryUrl>true</PublishRepositoryUrl>
+
+    <PackageIcon>package-icon.png</PackageIcon>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageLicenseFile>LICENSE.txt</PackageLicenseFile>
+
+    <IncludeSymbols>true</IncludeSymbols>
+    <SymbolPackageFormat>snupkg</SymbolPackageFormat>
+    <EmbedUntrackedSources>false</EmbedUntrackedSources>
+
+    <Title>CallMonitor implementation for FRITZ!Box</Title>
+    <Company>AM.WD</Company>
+    <Authors>Andreas Müller</Authors>
+    <Copyright>© {copyright:2025-} AM.WD</Copyright>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(GITLAB_CI)' == 'true'">
+    <ContinuousIntegrationBuild>true</ContinuousIntegrationBuild>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(GITLAB_CI)' == 'true'">
+    <SourceLinkGitLabHost Include="$(CI_SERVER_HOST)" Version="$(CI_SERVER_VERSION)" />
+    <PackageReference Include="Microsoft.SourceLink.GitLab" Version="8.0.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <InternalsVisibleTo Include="FritzCallMonitor.Tests" PublicKey="$(PublicKey)"/>
+    <InternalsVisibleTo Include="DynamicProxyGenAssembly2" PublicKey="0024000004800000940000000602000000240000525341310004000001000100c547cac37abd99c8db225ef2f6c8a3602f3b3606cc9891605d02baa56104f4cfc0734aa39b93bf7852f7d9266654753cc297e7d2edfe0bac1cdcf9f717241550e0a7b191195b7667bb4f64bcb8e2121380fd1d9d46ad2d92d2d15605093924cceaf74c4861eff62abf69b9291ed0a340e113be11e6a7d3113e92484cf7045cc7"/>
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="AMWD.NetRevisionTask" Version="1.3.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <Import Project="$([MSBuild]::GetPathOfFileAbove('Directory.Build.props', '$(MSBuildThisFileDirectory)\..'))" />
+</Project>

src/FritzCallMonitor.Demo/FritzCallMonitor.Demo.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FritzCallMonitor\FritzCallMonitor.csproj" />
+  </ItemGroup>
+
+</Project>

src/FritzCallMonitor/FritzCallMonitor.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <NrtTagMatch>v[0-9]*</NrtTagMatch>
+
+    <PackageId>AMWD.Net.Api.Fritz.CallMonitor</PackageId>
+    <PackageTags>fritz box api call monitor</PackageTags>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+
+    <AssemblyName>amwd-fritz-callmonitor</AssemblyName>
+    <RootNamespace>AMWD.Net.Api.Fritz.CallMonitor</RootNamespace>
+
+    <Product>FRITZ!Box CallMonitor</Product>
+    <Description>Implementation to read the real-time call monitor interface of FRITZ!Box.</Description>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Include="../../package-icon.png" Pack="true" PackagePath="/" />
+    <None Include="../../LICENSE.txt" Pack="true" PackagePath="/" />
+    <None Include="README.md" Pack="true" PackagePath="/" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.4" />
+  </ItemGroup>
+
+</Project>

src/FritzCallMonitor/README.md

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+# FRITZ!Box Call Monitor
+
+
+---
+
+Published under MIT License (see [choose a license]).
+
+[![Buy me a Coffee](https://shields.am-wd.de/badge/PayPal-Buy_me_a_Coffee-yellow?style=flat&logo=paypal)](https://link.am-wd.de/donate)
+
+[choose a license]: https://choosealicense.com/licenses/mit/