feat: add Cake build to produce powershell module (#2)

- Add Cake build project
- Change to CPM
- Package bumps for security bumps
- Reorganise solution structure to group harness projects

build/Scripts/CreateModuleManifest.ps1

@@ -0,0 +1,24 @@
+param (
+    [string]$path,
+    [string]$guid,
+    [string]$author,
+    [string[]]$nestedModules,
+    [string]$rootModule,
+    [string[]]$cmdletsToExport,
+    [string]$manifestFileLocation
+)
+
+$manifestSplat = @{
+    Path = "$path"
+    GUID = "$guid"
+    Author = "$author"
+    NestedModules = @($nestedModules)
+    RootModule = "$rootModule"
+    CmdletsToExport = @($cmdletsToExport)
+    FunctionsToExport = @()
+    VariablesToExport = @()
+    AliasesToExport = @()
+}
+
+New-ModuleManifest @manifestSplat
+New-Item "$manifestFileLocation" -ItemType File