Refactor project structure and rename files

- Renamed `Llamaindex.sln.DotSettings` to `LlamaIndex.sln.DotSettings`
- Renamed `llamaindex.core.tests.csproj` to `LlamaIndex.Core.Tests.csproj`
- Renamed `TestNodeWithScoreTest.cs` to `TestNodeWithScoreTest.cs`
- Renamed `TextNodeTests.cs` to `TextNodeTests.cs`
- Renamed various files in the `Retrievers`, `Schema`, and other directories from "llamaindex.core" to "LlamaIndex.Core"

These changes involve refactoring the project structure and renaming files for better organization and consistency.

samples/Aspire/README.md

@@ -1,20 +1,20 @@
-# LlamaParse + Aspire
-
-This sample shows how to add a [LlamaParse](https://docs.llamaindex.ai/en/stable/llama_cloud/llama_parse/) client for file parsing to a .NET Web API using Aspire.
-
-## Prerequisites
-
-- [.NET 8 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/8.0) or greater
-- [Aspire workload](https://dotnet.microsoft.com/en-us/download/dotnet/8.0)
-- [LlamaIndex API key](https://docs.cloud.llamaindex.ai/llamaparse/getting_started/get_an_api_key)
-- [Visual Studio](https://visualstudio.microsoft.com/downloads/) or [Visual Studio Code](https://code.visualstudio.com/Download)
-
-## Configuration
-
-1. Add your LlamaParse API key to the *appsettings.Development.json* configuration in the `LlamaParseAspire` project.
-
-```json
-"LlamaParse": {
-    "ApiKey": "ADD-YOUR-KEY-HERE"
-}
-```
+# LlamaParse + Aspire
+
+This sample shows how to add a [LlamaParse](https://docs.llamaindex.ai/en/stable/llama_cloud/llama_parse/) client for file parsing to a .NET Web API using Aspire.
+
+## Prerequisites
+
+- [.NET 8 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/8.0) or greater
+- [Aspire workload](https://dotnet.microsoft.com/en-us/download/dotnet/8.0)
+- [LlamaIndex API key](https://docs.cloud.llamaindex.ai/llamaparse/getting_started/get_an_api_key)
+- [Visual Studio](https://visualstudio.microsoft.com/downloads/) or [Visual Studio Code](https://code.visualstudio.com/Download)
+
+## Configuration
+
+1. Add your LlamaParse API key to the *appsettings.Development.json* configuration in the `LlamaParseAspire` project.
+
+```json
+"LlamaParse": {
+    "ApiKey": "ADD-YOUR-KEY-HERE"
+}
+```