chore: add eslint-import-resolver-typescript

[ktmud]

SUMMARY

Add eslint-import-resolver-typescript, let ESLint understand tsconfig.json when importing modules, so we can use compilerOption.paths to override TS modules.

Also disabled a couple of harmless type warning while testing.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A

TEST PLAN

Update tsconfig.json to something like:

{
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "baseUrl": ".",
    "paths": {
      "src/*": [
        "../../superset-frontend-override/src",
        "./src/*",
      ],
    },
  ...

Then TypeScript (including tsc and ts-loader in Webpack) will read your custom source files from ../../superset-frontend-override. This PR makes sure the imports are still valid to ESLint when the files do not exist in incubator-superset.

ADDITIONAL INFORMATION

• Has associated issue:
• Changes UI
• Requires DB Migration.
• Confirm DB Migration upgrade and downgrade tested.
• Introduces new feature or API
• Removes existing feature or API

[nytai]

lgtm!