on Windows, path returned by process.cwd() breaks the path parser

[BWsix]

Describe the bug

create-t3-app/src/utils/parseNameAndPath.ts

Lines 16 to 19 in f060d59

	// If the user ran `npx create-t3-app .` or similar, the appName should be the current directory
	if (appName === ".") {
	appName = process.cwd().split("/").pop();
	}

On windows, process.cwd() returns something like: D:\\path\\to\\project, which breaks the above code since it uses \\ instead of / to separate efferent segments of path.
Consequently, project generated by create t3 app will use an invalid app name:

Steps To Reproduce

1. (on any windows computer i guess) npx create-t3-app .
2. see package.json

Possible Solution

Use nodejs's builtin path module to parse the path returned by process.cwd():

  // If the user ran `npx create-t3-app .` or similar, the appName should be the current directory
  if (appName === ".") {
    const parsedCwd = pathModule.resolve(process.cwd());
    appName = pathModule.basename(parsedCwd);
  }

[BWsix]

I made a working patch (not tested on devices other than Windows 10 yet tho) on my fork: link
Would you accept a PR?

[nexxeln]

Yeah sure make a PR we'll take a look!