zh-cn: init the translation of svelte learning tutorial section

[hanyujie2002]

I plan to init the translation of the svelte tutorial section. Anyone is welcome to contribute. If you find any issues with the Simplified Chinese svelte section or have already submitted a PR, please mention me so that I can add your work to the progress list below:

• Getting started with Svelte, in zh-cn: init the translation of svelte getting start #17078
• Starting our Svelte to-do list app, in zh-cn: init the translation of svelte todo list begin #17107
• Dynamic behavior in Svelte: working with variables and props, in zh-cn: init translation of svelte variables props #17363
• Componentizing our Svelte app, in zh-cn: init translation of svelte components #17501
• Advanced Svelte: Reactivity, lifecycle, accessibility, in zh-cn: init translation of advanced svelte #17745
• Working with Svelte stores in zh-cn: init translation of Svelte stores #17974
• TypeScript support in Svelte in zh-CN: translate Svelte TypeScript tutorial #18276
• Deployment and next steps in zh-cn: init translation of svelte deployment #18302

[yin1999]

All the tasks are finished. Thanks for the contribution @hanyujie2002 👍