feat: display the tsconfig generated when running tsc --init

[AlexMunoz]

this PR improves the output of tsc --init

TODO: Diagnostics text

Fixes #45714

[ghost]

All CLA requirements met.

[orta]

This is good work! Note, it doesn't take CLI params passed in via the CLI into account yet too btw:

❯ rm tsconfig.json
❯ node /Users/ortatherox/dev/typescript/typescript-compiler/built/local/tsc.js --init

Created a new tsconfig.json with:
                                                                                                                     TS
  target: es5
  module: commonjs
  strict: true
  esModuleInterop: true


You can learn more at https://aka.ms/tsconfig.json
❯ rm tsconfig.json
❯ node /Users/ortatherox/dev/typescript/typescript-compiler/built/local/tsc.js --init --emitDecoratorMetadata true

Created a new tsconfig.json with:
                                                                                                                     TS
  target: es5
  module: commonjs
  strict: true
  esModuleInterop: true


You can learn more at https://aka.ms/tsconfig.json

[AlexMunoz]

Hey @orta emitDecoratorMetadata does not have the showInSimplifiedHelpView attribute. For that reason it does not appear in the output or am I wrong?

$ node ./TypeScript/built/local/tsc.js --init --target es2021 --outDir ./build

Created a new tsconfig.json with:                                                                                       
                                                                                                                     TS 
  target: es2021
  module: commonjs
  outDir: ./build
  strict: true
  esModuleInterop: true


You can learn more at https://aka.ms/tsconfig.json

[orta]

Ace, makes sense - yeah, can we drop that please - I changed my mind on it as we both posted at the same time #45714 (comment):

Maybe then we drop the requirement that showInSimplifiedHelpView be set to be true, because then it could act inconsistent with your CLI input.

Otherwise, structurally this looks 💯

[AlexMunoz]

I have updated the code! All compileOptions that have been changed + the defaultOptions are now included. Let me know if additional changes are needed... I'm writing a test for the expected outputs.

[orta]

Thanks, I've given this a fresh look through and it seems solid to me 👍🏻