Improves yarn init (#6703)

## What's the problem this PR addresses?

I often find myself doing the same things in every project I create, I
figure some of them could be improved in `yarn init`.

## How did you fix it?

- Widens the editorconfig configuration (otherwise it doesn't cover ts,
tsx, jsx, css, less, etc).
- Add `node_modules` as a gitignored path, regardless whether we're in
PnP mode or not.
- Add `--deps` and `--dev-deps` to add specific dependencies directly
during the project init.

## Checklist

<!--- Don't worry if you miss something, chores are automatically
tested. -->
<!--- This checklist exists to help you remember doing the chores when
you submit a PR. -->
<!--- Put an `x` in all the boxes that apply. -->
- [x] I have read the [Contributing
Guide](https://yarnpkg.com/advanced/contributing).

<!-- See
https://yarnpkg.com/advanced/contributing#preparing-your-pr-to-be-released
for more details. -->
<!-- Check with `yarn version check` and fix with `yarn version check
-i` -->
- [x] I have set the packages that need to be released for my changes to
be effective.

<!-- The "Testing chores" workflow validates that your PR follows our
guidelines. -->
<!-- If it doesn't pass, click on it to see details as to what your PR
might be missing. -->
- [x] I will check that all automated PR checks pass before the PR gets
reviewed.

.yarn/versions/b075d05f.yml

@@ -0,0 +1,24 @@
+releases:
+  "@yarnpkg/cli": minor
+  "@yarnpkg/plugin-init": minor
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-version"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/core"
+  - "@yarnpkg/doctor"
+  - "@yarnpkg/pnp"

packages/plugin-init/sources/commands/init.ts

@@ -55,6 +55,10 @@ export default class InitCommand extends BaseCommand {
     description: `Initialize a package with the given name`,
   });
 
+  initializer = Option.String({
+    required: false,
+  });
+
   // Options that only mattered on v1
   usev2 = Option.Boolean(`-2`, false, {hidden: true});
   yes = Option.Boolean(`-y,--yes`, {hidden: true});
@@ -180,6 +184,10 @@ export default class InitCommand extends BaseCommand {
         `!.yarn/sdks`,
         `!.yarn/versions`,
         ``,
+        `# Whether you use PnP or not, the node_modules folder is often used to store`,
+        `# build artifacts that should be gitignored`,
+        `node_modules`,
+        ``,
         `# Swap the comments on the following lines if you wish to use zero-installs`,
         `# In that case, don't forget to run \`yarn config set enableGlobalCache false\`!`,
         `# Documentation here: https://yarnpkg.com/features/caching#zero-installs`,
@@ -217,13 +225,11 @@ export default class InitCommand extends BaseCommand {
 
       const editorConfigProperties = {
         [`*`]: {
-          endOfLine: `lf`,
-          insertFinalNewline: true,
-        },
-        [`*.{js,json,yml}`]: {
           charset: `utf-8`,
-          indentStyle: `space`,
+          endOfLine: `lf`,
           indentSize: 2,
+          indentStyle: `space`,
+          insertFinalNewline: true,
         },
       };
 
@@ -248,6 +254,14 @@ export default class InitCommand extends BaseCommand {
         quiet: true,
       });
 
+      if (this.initializer) {
+        this.context.stdout.write(`\n`);
+
+        await this.cli.run([`dlx`, this.initializer], {
+          quiet: true,
+        });
+      }
+
       if (!xfs.existsSync(ppath.join(this.context.cwd, `.git`))) {
         await execUtils.execvp(`git`, [`init`], {
           cwd: this.context.cwd,