Update tutorial Part 1 to MV3

[mikehoffms]

This PR makes the following changes:

• README for the repo
  • PR: https://github.com/mikehoffms/MicrosoftEdge-Extensions/blob/user/mikehoffms/tut-part-1/README.md
  • Before/Live: https://github.com/microsoft/MicrosoftEdge-Extensions/blob/main/README.md
  • Writer/Editor pass.
  • Added table of samples & their articles.
  • Updated link text to match latest destination title.
    • Changed [here] link text to destination link text.
    • Corrected the way articles are linked to.
  • Applied corp style guide.
    • Clarified.
      • "Community resources" means the Code, Issues, and Discussions tabs of this repo.
      • add-ons = extensions.
  • Fixed typos.
• Part 1 sample
  • Copied manifest.json code listing from article https://learn.microsoft.com/microsoft-edge/extensions-chromium/getting-started/part1-simple-extension?tabs=v3#step-3-open-a-default-pop-up-dialog (from PR 3277's version of the article).
    • Changed "manifest_version": 2, to "manifest_version": 3,
    • Changed key name from "browser_action": { to: "action": {
    • Changed capitalization to match the article.
    • Changed name string to be different from Part 2.
      • To avoid displaying identical names for the two very different completed demos in the Extensions list & in the Manage Extensions page.
      • When 1 & 2 are both installed, need a way to tell which is which, in the Extensions list.
    • Changed description string to be different than Part 2, and described the type of functionality.
      • To prevent identical descriptions for the two very different completed demos in the Manage Extensions page.
      • When 1 & 2 are both installed, need a way to tell which is which, in the Manage Extensions page..
      • The two demos are very different and need distinctive descriptions of the different functionality.
  • These changes have been tested; installed and ran this modified demo from local dir branch of this repo; demo ran ok, per screenshots of it.
• Part 2 sample
  • Copied Part 2 code in text files from Part 2 article per PR 3277 over the existing listings.
    • To make leading spaces same between article & samples repo.
    • To update casing/ capitalization within strings.
    • To have a differentiated manifest "name" and "description" field.
  • In manifest.json, changed description string to be different than Part 1, and described the type of functionality.
  • These changes have been tested; installed and ran this modified demo from local dir branch of this repo; demo ran ok, per screenshots of it.

Related PR:
MicrosoftDocs/edge-developer#3277

AB#54220337

[mikehoffms]

@bhuvanapriyap pls review.
To approve the PR: Files changed page > Review changes green button > Approve option button along with a comment, "LGTM - PM".

[bhuvanapriyap]

Approved - LGTM - PM

[mikehoffms]

LGTM - Writer/Editor

[captainbrosset]

I'm approving the code changes. They help make things clearer, and easier to differentiate the part 1 and part 2 extension samples. It's also very important to move to MV3, since that's what articles on learn.microsoft.com document.

[yvsubhash]

LGTM - Dev