Remove 'nuke' project and update NUKE tool directories

Removed the 'nuke' project entry from the solution file and adjusted related NUKE tool directory paths within the build project file. These changes streamline the configuration and ensure the NUKE scripts are correctly located in the new directory structure.

Elsa.sln

@@ -395,8 +395,6 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Elsa.Agents.Management", "s
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Elsa.Agents.Persistence", "src\modules\Elsa.Agents.Persistence\Elsa.Agents.Persistence.csproj", "{6FE60BB4-DE6A-485C-A38A-1317C56AF2DA}"
 EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "nuke", "nuke", "{6B921B30-0396-406E-9238-03ED6AC839EC}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -1119,7 +1117,6 @@ Global
 		{9BF476B6-24BA-4312-9DFF-9082B1577046} = {50470834-4CD8-479A-8B58-0A1869BA5D37}
 		{6FE60BB4-DE6A-485C-A38A-1317C56AF2DA} = {50470834-4CD8-479A-8B58-0A1869BA5D37}
 		{B32DB9B2-AD6C-48A5-8682-4373CB045185} = {C80C8231-D35C-4ACC-9ED6-9F3DB221535E}
-		{6B921B30-0396-406E-9238-03ED6AC839EC} = {C80C8231-D35C-4ACC-9ED6-9F3DB221535E}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {D4B5CEAA-7D70-4FCB-A68E-B03FBE5E0E5E}

build/_build.csproj

@@ -5,8 +5,8 @@
     <TargetFramework>net8.0</TargetFramework>
     <RootNamespace/>
     <NoWarn>CS0649;CS0169;CA1050;CA1822;CA2211;IDE1006</NoWarn>
-    <NukeRootDirectory>../../build</NukeRootDirectory>
-    <NukeScriptDirectory>.</NukeScriptDirectory>
+    <NukeRootDirectory>../scripts/nuke</NukeRootDirectory>
+    <NukeScriptDirectory>../scripts/nuke</NukeScriptDirectory>
     <NukeTelemetryVersion>1</NukeTelemetryVersion>
     <NukeExcludeLogs>true</NukeExcludeLogs>
     <NukeExcludeDirectoryBuild>true</NukeExcludeDirectoryBuild>