feat: add initial README and ReleaseNotes for Bitip.Client with installation instructions and feature overview

src/clients/dotnet/Bitip.Client/README.md

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+# Bitip.Client
+
+[Bitip](https://lab.code-rove.com/gitea/tudor.stanciu/bitip#readme) is a high-performance GeoIP lookup service designed to provide accurate geolocation data for IP addresses.
+
+-------- TO DO --------
+- You can see Bitip live here: https://lab.code-rove.com/bitip/
+
+[Bitip.Client](https://lab.code-rove.com/gitea/tudor.stanciu/bitip/src/branch/main/src/clients/dotnet) is a simple .net client for Bitip. SDK is available as NuGet package on [NuGet](https://lab.code-rove.com/public-nuget-server/packages/bitip.client). Detail this section.
+
+## Installation
+
+You can install the Bitip.Client package via NuGet Package Manager Console:
+```bash
+
+Install-Package Bitip.Client
+```
+Or via .NET CLI:
+```bash
+
+--- TO DO ---

src/clients/dotnet/Bitip.Client/ReleaseNotes.txt

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+1.0.0 release [2025-10-08 01:35]
+◾ Initial release of BitipClient, a .NET library for interacting with the Bitip API.
+◾ Provides methods for retrieving IP geolocation data, ASN information, and domain details.
+◾ Supports asynchronous operations for improved performance.
+◾ Includes error handling for network issues and invalid API responses.
+◾ Comprehensive documentation and usage examples included.
+◾ Unit tests covering core functionality to ensure reliability.
+◾ NuGet package available for easy integration into .NET projects.