Rename foundation collection facades

[caendesilva]

Rename foundation collection facades

Old	New
Hyde\Foundation\Facades\FileCollection	Hyde\Foundation\Facades\Files
Hyde\Foundation\Facades\PageCollection	Hyde\Foundation\Facades\Pages
Hyde\Foundation\Facades\Router	Hyde\Foundation\Facades\Router

This provides two benefits:

1. First, better IDE autocompletion as the facades will not conflict with the underlying classes.
2. And second, they would match the syntax of Hyde::files(), Hyde::pages(), and Hyde::routes().

Fixes #980

[codecov]

Codecov Report

Merging #981 (8a4f571) into master (8cb6a7e) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 8a4f571 differs from pull request most recent head 8f68520. Consider uploading reports for the commit 8f68520 to get more accurate results

@@              Coverage Diff              @@
##              master      #981     +/-   ##
=============================================
  Coverage     100.00%   100.00%             
- Complexity      1264      2528   +1264     
=============================================
  Files            150       300    +150     
  Lines           3332      6664   +3332     
=============================================
+ Hits            3332      6664   +3332     

Impacted Files	Coverage Δ
...ckages/framework/src/Foundation/Facades/Routes.php	100.00% <ø> (ø)
...framework/src/Foundation/Kernel/FileCollection.php	100.00% <ø> (ø)
.../src/Console/Commands/RebuildStaticPageCommand.php	100.00% <100.00%> (ø)
...ackages/framework/src/Foundation/Facades/Files.php	100.00% <100.00%> (ø)
...ackages/framework/src/Foundation/Facades/Pages.php	100.00% <100.00%> (ø)
...amework/Features/Navigation/BaseNavigationMenu.php	100.00% <100.00%> (ø)
...ework/Features/Navigation/DocumentationSidebar.php	100.00% <100.00%> (ø)
...mework/src/Framework/Services/DiscoveryService.php	100.00% <100.00%> (ø)
...ramework/src/Framework/Services/RebuildService.php	100.00% <100.00%> (ø)
packages/framework/src/Pages/Concerns/HydePage.php	100.00% <100.00%> (ø)
... and 151 more

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