fix(aws-cdk): escape spaces while invoking dotnet command

When dotnet command is invoked, if arguments are given
with spaces unescaped, it interprets that as the start
of second command.

In this case, when csharp project is initialized,
`dotnet sln` command is invoked with slnPath and fsprojPath.

Spaces in `slnPath` and `fsprojPath` should be escaped
before providing them as argument to dotnet command

Fixes aws#18803

----

*By submitting this pull request, I confirm that my contribution is made under the terms of t
he Apache-2.0 license*

packages/aws-cdk/lib/init-templates/v1/app/csharp/add-project.hook.ts

@@ -3,10 +3,13 @@ import * as path from 'path';
 import { InvokeHook } from '../../../../init';
 
 export const invoke: InvokeHook = async (targetDirectory: string) => {
+  const escapeSpaces = (value: string) => {
+    return value.replace(' ', '\\ ');
+  };
   const slnPath = path.join(targetDirectory, 'src', '%name.PascalCased%.sln');
   const csprojPath = path.join(targetDirectory, 'src', '%name.PascalCased%', '%name.PascalCased%.csproj');
 
-  const child = child_process.spawn('dotnet', ['sln', slnPath, 'add', csprojPath], {
+  const child = child_process.spawn('dotnet', ['sln', escapeSpaces(slnPath), 'add', escapeSpaces(csprojPath)], {
     // Need this for Windows where we want .cmd and .bat to be found as well.
     shell: true,
     stdio: ['ignore', 'pipe', 'inherit'],

packages/aws-cdk/lib/init-templates/v1/app/fsharp/add-project.hook.ts

@@ -3,10 +3,13 @@ import * as path from 'path';
 import { InvokeHook } from '../../../../init';
 
 export const invoke: InvokeHook = async (targetDirectory: string) => {
+  const escapeSpaces = (value: string) => {
+    return value.replace(' ', '\\ ');
+  };
   const slnPath = path.join(targetDirectory, 'src', '%name.PascalCased%.sln');
   const fsprojPath = path.join(targetDirectory, 'src', '%name.PascalCased%', '%name.PascalCased%.fsproj');
 
-  const child = child_process.spawn('dotnet', ['sln', slnPath, 'add', fsprojPath], {
+  const child = child_process.spawn('dotnet', ['sln', escapeSpaces(slnPath), 'add', escapeSpaces(fsprojPath)], {
     // Need this for Windows where we want .cmd and .bat to be found as well.
     shell: true,
     stdio: ['ignore', 'pipe', 'inherit'],