fix: parse path returned from process.cwd() before using it

[BWsix]

Fix package name error mentioned in #302

• I reviewed linter warnings + errors, resolved formatting, types and other issues related to my work
• The PR title follows the convention we established conventional-commit
• I performed a functional test on my final commit

---

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:

Changes

This PR uses nodejs's builtin path module to parse the path returned by process.cwd() before consuming it, ensures windows users get correct package name.

[juliusmarminge]

I am not on Windows so cannot confirm n'or deny if this is working. How bout you @nexxeln?

[nexxeln]

I am not on Windows so cannot confirm n'or deny if this is working. How bout you @nexxeln?

Seems to be working on my end. Can you also confirm it works on mac?

[juliusmarminge]

I am not on Windows so cannot confirm n'or deny if this is working. How bout you @nexxeln?

Seems to be working on my end. Can you also confirm it works on mac?

The name in package.json is correctly parsed but the logs are a bit awkward (although I assume they are for the current setup as well)