Dependency Injection migration: Service Provider and first migration

[MissAllSunday]

This PR adds a way to register services as dependencies and migrates ErrorHandler to be served via the Container

Heres a Graph TB for reference on how ErrorHandler is been used and how backward compatibility is achieved by leaving the Original ErrorHandler as a Facade and mark it as deprecated in favor of the new Service. I'm aware original ErrorHandler has some duplicated code for calling the container, however, this is done to maximize backward compatibility.

graph TB
    subgraph "Legacy Code"
        A[Legacy Code Calls]
        A1["ErrorHandler::log()"]
        A2["ErrorHandler::fatal()"]
        A3["ErrorHandler::catch()"]
        A4["new ErrorHandler()"]
    end
    
    subgraph "Facade Layer"
        B[ErrorHandler Class]
        B1[getService Method]
        B2[Static Methods]
    end
    
    subgraph "DI Container"
        C[Container::getInstance]
        D[ServiceProvider]
        E[ServicesList.php]
    end
    
    subgraph "Service Layer"
        F[ErrorHandlerService]
        F1[handleError]
        F2[log]
        F3[fatal]
        F4[catch]
    end
    
    A --> B
    A1 --> B2
    A2 --> B2
    A3 --> B2
    A4 --> B
    
    B --> B1
    B2 --> B1
    
    B1 -->|Try Container First| C
    C --> D
    D --> E
    E -->|Returns Shared Instance| F
    
    B1 -->|Fallback if Container Unavailable| F
    
    F --> F1
    F --> F2
    F --> F3
    F --> F4
    
    style B fill:#e1f5ff
    style F fill:#fff4e1
    style C fill:#e8f5e9
    style A fill:#fce4ec

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Of course arch and folders/naming convention should be subject to modifications to better suit current patterns if needed.

[dragomano]

Examples of two different container implementations to demonstrate just how powerful this thing is. Both versions are fully working:

• League Container
• Laminas Service Manager

[Sesquipedalian]

In addition to fixing the noted minor nit, please run PHP-CS-Fixer on all modified and added files in order to make them compliant with the SMF code standard.

(It appears that our CI script that is supposed to run PHP-CS-Fixer as a linter is not working right now. If it were, this issue would have been flagged automatically.)

[Sesquipedalian]

Suggested change

	\SMF\Infrastructure\Container::init();
	SMF\Infrastructure\Container::init();

nit