projectStructure.md template added

Code dive session video link added

doc/projectStructure.md

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+# Project Structure
+
+:movie_camera: [You can find code dive session recorede video here](https://youtu.be/_adhRj19ESY)
+
+```
+|_ doc
+|_ eng
+|_ examples
+|_ src
+    |_ Core
+    |   |_ ServiceWrapper
+    |   |_ WinSWCore
+    |_ Plugins
+    |_ Test/winswTest
+```
+
+## :open_file_folder: doc
+
+This directory contains all the documents related to WinSW project.
+
+## :open_file_folder: eng
+
+### :page_facing_up: build.yaml  
+
+This contains Build configurations. We have another relase pipeline which is not yet added to this repository and will be added in later.  
+
+## :open_file_folder: examples
+
+This folder contains templates for configuration files. Currently there are XML configuration templates. YAML templates will be added in later.
+
+### :page_facing_up: sample-minimal.xml
+
+This contains a template for mandotory configurations.
+
+### :page_facing_up: sample-allOptions.xml
+
+This template contains all possible configurations with documentation.
+
+## :open_file_folder: src
+
+This contains the implementation for the WinSW.
+
+## :open_file_folder: Core
+
+## :notebook: ServiceWrapper
+
+This is the main executable project.
+```
+|_ ServiceWrapper
+    |_ Logging
+    |   |_ WrapperServiceEventLogProvider.cs
+    |_ Properties
+    |   |_ AssemblyInfo.cs
+    |_ Main.cs
+    |_ NullableAttributes.cs
+    |_ winsw.csproj
+```
+
+#### :page_facing_up: Main.cs
+
+This file contains the entry point of the program. (Main method). This file includes the main flow of the program and has implemented the logics for command line arguments.  
+ex : ```install, uninstall, start, stop, restart```
+
+## :notebook: WinSWCore
+
+```
+|_ WinSWCore
+    |_ Configuration
+    |_ Extensions
+    |_ Logging
+    |_ Native
+    |_ Util
+    |_ Download.cs
+    |_ DynamicProxy.cs
+    |_ LogAppenders.cs
+    |_ NullableAttributes.cs
+    |_ PeriodicRollingCalendar.cs
+    |_ ServiceDescriptor.cs
+    |_ WinSWCore.csproj
+    |_ WinSWException.cs
+    |_ WinSWSystem.cs
+    |_ Wmi.cs
+    |_ WmiSchema.cs
+```
+
+#### :page_facing_up: ServiceDescriptor.cs
+
+This contains the logics for extracting configurations from XML file. ```ServiceDescriptor``` class get XML file as a argument. Currently configuratinos are provided on demand.
+
+## :open_file_folder: Configuration
+
+#### :page_facing_up: IWinSWConfiguration.cs
+
+```IWinSWConfigurations``` interface contains all configurations.
+
+#### :page_facing_up: DefaultSettings.cs
+
+This contains default values for all configurations which included in ```IWinSWConfiguration.cs```.