Escape all paths in DownloadLibDatadog (#7583)

## Summary of changes

This wraps all paths in `DownloadLibDatadog` so that we don't run into
issues of spaces in the paths.

## Reason for change

Fails to build if you are running the build script from a directory that
has a space in it.

## Implementation details

Extracted some of the paths and then quoted them all.

## Test coverage

Ran locally in a directory -> `C:/Delete Me/dd-trace-dotnet/` and it
failed.
With this it passed.

## Other details
<!-- Fixes #{issue} -->


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Author: bouwkast

tracer/build/_build/Build.Steps.cs

@@ -609,10 +609,19 @@ async Task DownloadWafVersion(string libddwafVersion = null, string uncompressFo
                         var vcpkgExePath = await GetVcpkg();
                         var vcpkgRoot = Environment.GetEnvironmentVariable("VCPKG_ROOT") ?? Directory.GetParent(vcpkgExePath).FullName;
                         var vcpkg = ToolResolver.GetLocalTool(vcpkgExePath);
+
                         foreach (var arch in new[] { MSBuildTargetPlatform.x64, MSBuildTargetPlatform.x86 })
                         {
+                            var triplet = $"{arch}-windows";
+                            // note that the following are all quoted when entered into the vcpkg call itself
+                            // this is necessary to support cases where we have a space in the folder name
+                            var installRoot = $@"{BuildArtifactsDirectory}\deps\vcpkg\{triplet}";
+                            var downloads = $@"{BuildArtifactsDirectory}\obj\vcpkg\downloads";
+                            var packages = $@"{BuildArtifactsDirectory}\obj\vcpkg\packages";
+                            var buildTrees = $@"{BuildArtifactsDirectory}\obj\vcpkg\buildtrees";
+
                             // This big line is the same generated by VS when installing libdatadog while building the profiler
-                            vcpkg($"install --x-wait-for-lock --triplet \"{arch}-windows\" --vcpkg-root \"{vcpkgRoot}\" \"--x-manifest-root={RootDirectory}\" \"--x-install-root={BuildArtifactsDirectory}\\deps\\vcpkg\\{arch}-windows\" --downloads-root {BuildArtifactsDirectory}\\obj\\vcpkg\\downloads --x-packages-root {BuildArtifactsDirectory}\\obj\\vcpkg\\packages --x-buildtrees-root {BuildArtifactsDirectory}\\obj\\vcpkg/buildtrees  --clean-after-build");
+                            vcpkg($@"install --x-wait-for-lock --triplet ""{triplet}"" --vcpkg-root ""{vcpkgRoot}"" ""--x-manifest-root={RootDirectory}"" ""--x-install-root={installRoot}"" --downloads-root ""{downloads}"" --x-packages-root ""{packages}"" --x-buildtrees-root ""{buildTrees}"" --clean-after-build");
                         }
                     }
                 });
@@ -2736,14 +2745,15 @@ private async Task<string> GetVcpkg()
         // Check if already downloaded
         var vcpkgRoot = RootDirectory / "artifacts" / "bin" / "vcpkg";
         var vcpkgExecPath = vcpkgRoot / "vcpkg.exe";
+        var bootstrap = vcpkgRoot / "bootstrap-vcpkg.bat";
 
         if (File.Exists(vcpkgExecPath))
         {
             return $"{vcpkgExecPath}";
         }
 
         await DownloadAndExtractVcpkg(vcpkgRoot);
-        Cmd.Value(arguments: $"cmd /c {vcpkgRoot / "bootstrap-vcpkg.bat"}");
+        Cmd.Value(arguments: $@"cmd /c ""{bootstrap}""");
         return $"{vcpkgRoot / "vcpkg.exe"}";
     }