Remove old icon and update project references

- Deleted the binary file `icon.png`.
- Updated `PackageIcon` paths in project files to remove dependency on `Assets\icon.png`.
- Added a new `None` item in `DigitalData.EmailProfilerDispatcher.Abstraction.csproj` to include `..\Assets\icon.png`.
- Created a new project section for "Solution Items" in `DigitalData.EmailProfilerDispatcher.sln` to include `icon.png`.
- Removed the previous `ItemGroup` for `None` that updated `Assets\icon.png`.
- The binary file `icon.png` was replaced with a new version.

DigitalData.EmailProfilerDispatcher.sln

@@ -11,6 +11,13 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DigitalData.EmailProfilerDi
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "DigitalData.EmailProfilerDispatcher", "DigitalData.EmailProfilerDispatcher\DigitalData.EmailProfilerDispatcher.csproj", "{DF202B1D-6C6F-4354-9B73-20F03486D020}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{8EC462FD-D22E-90A8-E5CE-7E832BA40C5D}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Assest", "Assest", "{02EA681E-C7D8-13C7-8484-4AC65E1B71E8}"
+	ProjectSection(SolutionItems) = preProject
+		Assets\icon.png = Assets\icon.png
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -37,6 +44,9 @@ Global
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{02EA681E-C7D8-13C7-8484-4AC65E1B71E8} = {8EC462FD-D22E-90A8-E5CE-7E832BA40C5D}
+	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {CB0B8122-D532-4A7F-87CC-760B959A433C}
 	EndGlobalSection