[macOS] Clarify clang versions (#2147)

* add clang versions

* changed default location to  get-command

* changed formatting

Co-authored-by: Leonid Lapshin <originalnoe-nazvanie@yandex.ru>

images/macos/software-report/SoftwareReport.Common.psm1

@@ -72,8 +72,12 @@ function Get-FortranVersion {
 }
 
 function Get-ClangLLVMVersion {
-    $clangLLVMVersion = Run-Command "$(brew --prefix llvm)/bin/clang --version" | Select-Object -First 1 | Take-Part -Part 2
-    "Clang/LLVM $clangLLVMVersion"
+    $locationsList = @("$((Get-Command clang).Source)", '$(brew --prefix llvm)/bin/clang')
+    $locationsList | Foreach-Object {
+        (Run-Command "${_} --version" | Out-String) -match "(?<version>\d+\.\d+\.\d+)" | Out-Null
+        $version = $Matches.version
+        "Clang/LLVM $version " + $(if(${_} -Match "brew") {"is available on ``${_}``"} else {"is default"})
+    }
 }
 
 function Get-NVMVersion {