Added Basic build script

build/build.ps1

@@ -0,0 +1,35 @@
+[cmdletbinding()]
+param(
+    [switch]$Bootstrap,
+    [switch]$Test,
+    [switch]$CodeCoverage
+)
+
+# Variables
+$build = @{
+    PesterVersion = [version]'4.10.1'
+}
+
+# Bootstrap step
+if ($Bootstrap) {
+    Write-Information "Validate and install required build pre-reqs"
+    if ( $Build['PesterVersion'] -inotin (Get-Module Pester -ListAvailable).Version ) {
+        Write-Warning 'Required "Pester" module is missing. Installing required "Pester" module...'
+        Install-Module Pester -RequiredVersion $Build['PesterVersion'] -Force -Scope CurrentUser -SkipPublisherCheck
+    }
+    Import-Module Pester -RequiredVersion $Build['PesterVersion']
+}
+
+# Test step
+if ($Test) {
+    if ( [version]$Build['PesterVersion'] -inotin (Get-Module Pester -ListAvailable).Version ) {
+        throw "Cannot find the required module 'Pester' version $($Build.PesterVersion)"
+    }
+
+    $ModuleFiles = Get-ChildItem -Path .\src -Recurse -Include "*.psm1", "*.ps1" | Select-Object -ExpandProperty FullName
+    $results = Invoke-Pester -Script .\Tests -CodeCoverage $ModuleFiles -PassThru
+
+    if ($CodeCoverage) {
+        "Coverage: {0:N2} %" -f (($results.CodeCoverage.NumberOfCommandsExecuted / $results.CodeCoverage.NumberOfCommandsAnalyzed) * 100)
+    }
+}