[Tour of Beam][Task] Update ToB frontend README

Open

#25,076 opened on Jan 19, 2023 1 comment 0 reactions 1 assignee Claimed by @nausharipov View on GitHub

P3 task

Description

### What needs to happen?

The updated README needs to include instructions for using the new Gradle tasks and mirror Playground's README structure.

### Issue Priority

Priority: 3 (nice-to-have improvement)

### Issue Components
Tour of Beam

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