LibGUI: Make `Application`'s construction fallible

The pattern to construct `Application` was to use the `try_create`
method from the `C_OBJECT` macro. While being safe from an OOM
perspective, this method doesn't propagate errors from the constructor.
This patch make `Application` use the `C_OBJECT_ABSTRACT` and manually
define a `create` method that can bubble up errors from the
construction stage.

This commit also removes the ability to use `argc` and `argv` to
create an `Application`, only `Main`'s `Arguments` can be used.

From a user point of view, the patch renames `try_create` => `create`,
hence the huge number of modified files.

1 files changed, 1 insertions, 1 deletions

diff --git a/Userland/Applications/PDFViewer/main.cpp b/Userland/Applications/PDFViewer/main.cpp
index 456249e100..1910989797 100644
--- a/Userland/Applications/PDFViewer/main.cpp
+++ b/Userland/Applications/PDFViewer/main.cpp
@@ -23,7 +23,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     args_parser.add_positional_argument(file_path, "PDF file to open", "path", Core::ArgsParser::Required::No);
     args_parser.parse(arguments);
 
-    auto app = TRY(GUI::Application::try_create(arguments));
+    auto app = TRY(GUI::Application::create(arguments));
     auto app_icon = GUI::Icon::default_icon("app-pdf-viewer"sv);
 
     Config::pledge_domain("PDFViewer");