added psr list page

Signed-off-by: bidi <bidi@apidemia.com>

Author: bidi47

docs/book/v5/introduction/psr.md

@@ -0,0 +1,27 @@
+# PSRs
+
+Some of the PSRs on this list are at the core of Dotkernel API, but several others are installed with the 3rd party packages used in the application.
+Below is the full list of PSRs present in Dotkernel API and their purpose.
+
+* PSR-3: (Logger Interface)[https://www.php-fig.org/psr/psr-3/]
+    * Interface for logging libraries.
+* PSR-4: (Autoloader)[https://www.php-fig.org/psr/psr-4/]
+    * Autoloading classes from file paths.
+* PSR-6: (Caching Interface)[https://www.php-fig.org/psr/psr-6/]
+    * Interface for caching systems to improve the performance of any project.
+* PSR-7: (HTTP message interfaces)[https://www.php-fig.org/psr/psr-7/]
+    * Interfaces for representing HTTP messages and URIs for use with HTTP messages.
+* PSR-11: (Container interface)[https://www.php-fig.org/psr/psr-11/]
+    * Interface for dependency injection containers.
+* PSR-13: (Link definition interfaces)[https://www.php-fig.org/psr/psr-13/]
+    * Way of representing a hypermedia link independently of the serialization format.
+* PSR-14: (Event Dispatcher)[https://www.php-fig.org/psr/psr-14/]
+    * Mechanism for event-based extension and collaboration.
+* PSR-15: (HTTP Server Request Handlers)[https://www.php-fig.org/psr/psr-15/]
+    * Interfaces for HTTP server request handlers and HTTP server middleware components that use HTTP messages.
+* PSR-17: (HTTP Factories)[https://www.php-fig.org/psr/psr-17/]
+    * Standard for factories that create PSR-7 compliant HTTP objects.
+* PSR-18: (HTTP Client)[https://www.php-fig.org/psr/psr-18/]
+    * Interface for sending HTTP requests and receiving HTTP responses.
+* PSR-20: (Clock)[https://www.php-fig.org/psr/psr-20/]
+    * Interface for reading the system clock.

mkdocs.yml

@@ -14,6 +14,7 @@ nav:
           - "Server Requirements": v5/introduction/server-requirements.md
           - "File Structure": v5/introduction/file-structure.md
           - "Packages": v5/introduction/packages.md
+          - "PSRs": v5/introduction/psr.md
       - Installation:
           - "Getting Started": v5/installation/getting-started.md
           - "Composer": v5/installation/composer.md