added API methods to the documentation

contrib/api-development/api-methods.md

@@ -0,0 +1,27 @@
+## API Methods
+
+- **GET**: 
+    - The GET method is used to retrieve data from a specified resource. 
+    - It is a safe and idempotent method, meaning that it should not have any side effects and can be called multiple times without changing the result. 
+    - Use the GET method when you want to retrieve information from the server.
+
+- **POST**: 
+    - The POST method is used to submit data to be processed to a specified resource. 
+    - It is not idempotent, meaning that calling the same POST request multiple times may result in different outcomes. 
+    - Use the POST method when you want to create a new resource on the server.
+
+- **PUT**: 
+    -   The PUT method is used to update a specified resource with new data. 
+    - It is idempotent, meaning that calling the same PUT request multiple times should have the same effect as calling it once. 
+    - Use the PUT method when you want to update an existing resource on the server.
+
+- **PATCH**:
+    - The PATCH method is used to apply partial modifications to a resource. 
+    - It is not idempotent, meaning that calling the same PATCH request multiple times may result in different outcomes. 
+    - Use the PATCH method when you want to update a resource with partial data.
+
+- **DELETE**: 
+    - The DELETE method is used to delete a specified resource. 
+    - It is idempotent, meaning that calling the same DELETE request multiple times should have the same effect as calling it once. 
+    - Use the DELETE method when you want to remove a resource from the server.
+

contrib/api-development/index.md

@@ -1,3 +1,3 @@
 # List of sections
 
-- [Section title](filename.md)
+- [API Methods](api-methods.md)