minor #32452 [Bundles] Rename getPublicPath() as getPublicDir() (javiereguiluz)

This PR was squashed before being merged into the 4.4 branch (closes #32452).

Discussion
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[Bundles] Rename getPublicPath() as getPublicDir()

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | -
| License       | MIT
| Doc PR        | I'll add this if approved

While documenting #31975 (see symfony/symfony-docs#11930) I realized that the `getPublicPath()` method name is not consistent with the rest of Symfony.

In Symfony, "path" is usually associated to routes and we use "dir" for things similar to this:

* `getCacheDir()` and `getLogdir()` to override Symfony structure (https://symfony.com/doc/current/configuration/override_dir_structure.html)
* `binDir`, `configDir`, `srcDir`, `varDir`, `publicDir` in Symfony Flex recipes (https://github.com/symfony/recipes) to override the dir structure

So, this PR proposes to rename `getPublicPath()` as `getPublicDir()`

Commits
-------

4ab2f99 [Bundles] Rename getPublicPath() as getPublicDir()

Author: fabpot

Bundle/Bundle.php

@@ -135,7 +135,7 @@ public function registerCommands(Application $application)
     {
     }
 
-    public function getPublicPath(): string
+    public function getPublicDir(): string
     {
         return 'Resources/public';
     }

Bundle/BundleInterface.php

@@ -20,7 +20,7 @@
  *
  * @author Fabien Potencier <[email protected]>
  *
- * @method string getPublicPath() Returns relative path for public assets
+ * @method string getPublicDir() Returns relative path for the public assets directory
  */
 interface BundleInterface extends ContainerAwareInterface
 {

Tests/KernelTest.php

@@ -627,7 +627,7 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
     {
         $bundle = $this
             ->getMockBuilder('Symfony\Component\HttpKernel\Bundle\BundleInterface')
-            ->setMethods(['getPath', 'getPublicPath', 'getParent', 'getName'])
+            ->setMethods(['getPath', 'getPublicDir', 'getParent', 'getName'])
             ->disableOriginalConstructor()
         ;
 
@@ -651,7 +651,7 @@ protected function getBundle($dir = null, $parent = null, $className = null, $bu
 
         $bundle
             ->expects($this->any())
-            ->method('getPublicPath')
+            ->method('getPublicDir')
             ->willReturn('Resources/public')
         ;