feat: add meta change feature for TableWalker

[islxyqwe]

Make TableWalker able to change field's meta when the onMetaChange prop is set in TableWalker.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
graphic-walker	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 8, 2024 9:48am

[github-actions]

Risk Level 2 - /home/runner/work/graphic-walker/graphic-walker/packages/graphic-walker/src/store/visualSpecStore.ts

The code seems to be well written and follows good practices. However, there are a few areas that could be improved for better readability and maintainability:

1. Use of magic strings: There are several instances where string literals are used directly in the code (e.g., 'Chart 1', 'bin', 'log10', etc.). These could be replaced with constants to avoid potential typos and make it easier to manage these values.

const CHART_NAME = 'Chart 1';
const BIN_TYPE = 'bin';
const LOG_TYPE = 'log10';
// use these constants in the code

2. Long functions: Some functions like paintFields and moveField are quite long and complex. Breaking them down into smaller, more manageable functions would improve readability and make the code easier to maintain.

3. Lack of comments: There are very few comments in the code, making it hard to understand the purpose of some functions and variables. Adding comments would greatly improve the maintainability of the code.

4. Use of any type: There are a few instances where the any type is used. This defeats the purpose of TypeScript's static typing and can lead to runtime errors. It would be better to define interfaces or types for these instances.

5. Error handling: There doesn't seem to be much error handling in the code. Adding error handling would make the code more robust and prevent potential issues at runtime.

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Risk Level 2 - /home/runner/work/graphic-walker/graphic-walker/packages/graphic-walker/src/Table.tsx

The code changes are generally safe and follow good practices. However, there are a few areas that could be improved for better readability and maintainability:

1. Error Handling: The reportError function is used to handle errors, but it's not clear what happens if onError is not provided. It would be better to have a default error handling behavior. For example:

onError?.(err) || console.error(err);

2. Use of Ternary Operator: In the TableAppWithContext function, the ternary operator is used to assign values to appearance and data. This could be simplified for better readability. For example:

const appearance = props.appearance || props.dark;
const data = props.data || props.dataSource;

3. Use of Optional Chaining: In the DatasetTable component, the onMetaChange prop is conditionally assigned based on vizStore.onMetaChange. This could be simplified using optional chaining. For example:

onMetaChange={vizStore.onMetaChange && ((fid, fIndex, diffMeta) => vizStore.updateCurrentDatasetMetas(fid, diffMeta))}

4. Use of useMemo Hook: The useMemo hook is used in TableAppWithContext function. It's not clear why the computation is memoized. If the computation is not expensive, it might be unnecessary to use useMemo.

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