feat: remake example to include package.json testing

[mnaoumov]

It assumes obsidianmd/eslint-plugin#80 merged.
You can merge it locally and then npm install --dev path/to/eslint-plugin

[mnaoumov]

> npm run lint

> obsidian-sample-plugin@1.0.0 lint
> eslint .


F:\dev\work\obsidian\joethei-obsidian-sample-plugin\package.json
  27:3  error  "moment" should be replaced with an alternative package. Read more here: https://github.com/es-tooling/module-replacements/blob/main/docs/modules/momentjs.md  depend/ban-dependencies

F:\dev\work\obsidian\joethei-obsidian-sample-plugin\src\main.ts
   6:22  error  Rename the sample classes                                                                                                               
                  obsidianmd/sample-names
  69:3   error  Remove the sample `registerInterval` call from the plugin template                                                                      
                  obsidianmd/no-sample-code
  69:50  error  [no-console] Avoid unnecessary logging to console. See https://docs.obsidian.md/Plugins/Releasing/Plugin+guidelines#Avoid+unnecessary+logging+to+console  obsidianmd/rule-custom-message
  85:7   error  Rename the sample classes                                                                                                               
                  obsidianmd/sample-names

F:\dev\work\obsidian\joethei-obsidian-sample-plugin\src\settings.ts
   4:18  error  Rename the sample classes  obsidianmd/sample-names
  12:14  error  Rename the sample classes  obsidianmd/sample-names

✖ 7 problems (7 errors, 0 warnings)
  1 error and 0 warnings potentially fixable with the `--fix` option.