Add Python example to d1 tutorial

[hoodmane]

Summary

Added Python code to the tab switcher for the d1 tutorial.
In order to do this I had to refactor TypeScriptExample into TypeScriptExample and TypeScriptTabs. TypeScriptExample creates the <Tabs> and then uses <TypeScriptTabs> and <TypeScriptTabs> creates the two tab items. That way I can add a Python tab to the tab switcher.

Screenshots (optional)

Documentation checklist

• The documentation style guide has been adhered to.
• Files which have changed name or location have been allocated redirects.

[dom96]

I don't think this refactoring is necessary, we already have a way to add Python to these examples. See how I've done it here for example:

cloudflare-docs/src/content/docs/durable-objects/get-started.mdx

Lines 75 to 100 in 9a1af27

	<Tabs syncKey="workersExamples">
	<TypeScriptExample omitTabs={true}>
	```ts
	export class MyDurableObject extends DurableObject<Env> {
	constructor(ctx: DurableObjectState, env: Env) {
	// Required, as we're extending the base class.
	super(ctx, env)
	}
	}
	```
	</TypeScriptExample>
	<TabItem label="Python" icon="seti:python">
	```python
	from workers import DurableObject
	class MyDurableObject(DurableObject):
	def __init__(self, ctx, env):
	super().__init__(ctx, env)
	```
	</TabItem>
	</Tabs>

[hoodmane]

And I opened it from my production branch. I guess I'll close it and make a new one.