Rename modules.local to modules

Non-local modules, e.g. those declared by external packages, live wherever deps are installed, which is usually `vendor`.
Local modules, therefore, are the only modules that will be declared by _this_ package. Hence, the "locality" of the modules does not need to be reaffirmed.

README.md

@@ -115,7 +115,7 @@ Use this project as a starter for your [modular][modularity] WordPress plugin!
         into packages of their own when necessary.
 
         Modules can be installed from other packages, or included in the package. In the latter
-        case, they should be added to the directory `modules.local`. One such module, the `core`
+        case, they should be added to the directory `modules`. One such module, the `core`
         module of the plugin, is already included in the package. Its `composer.json` should
         also be personalized, just like the `composer.json` of this package.
 
@@ -215,7 +215,7 @@ To add a module from another package, require that package with Composer
 and add the `ModuleInterface` instance to the list.
 
 ##### Local Modules
-To add a local module, add the module to the `modules.local` folder,
+To add a local module, add the module to the `modules` folder,
 and do the same as for any other module. Local modules may also declare their own
 dependencies by adding a `composer.json` file to their root folder.
 These files will be picked up by Composer when updating dependencies in

composer.json

@@ -37,7 +37,7 @@
   "extra": {
     "merge-plugin": {
       "include": [
-        "modules.local/*/composer.json"
+        "modules/*/composer.json"
       ]
     }
   },

inc/modules.php

@@ -2,7 +2,7 @@
 
 return function (string $rootDir, string $mainFile): iterable {
     $modulesDir = "$rootDir/modules";
-    $localModulesDir = "$rootDir/modules.local";
+    $localModulesDir = "$rootDir/modules";
 
     $modules = [
         (require "$localModulesDir/core/module.php")($rootDir, $mainFile),

psalm.xml.dist

@@ -22,7 +22,7 @@
 >
     <projectFiles>
         <directory name="src"/>
-        <directory name="modules.local"/>
+        <directory name="modules"/>
     </projectFiles>
 
     <stubs>