Add CloudEvents (#57)

* Add CloudEvents

* Moving Standard Webhooks to API Specification category

README.md

@@ -648,10 +648,12 @@ System integration is the process of linking together different IT systems (com
 ### API Specification
 - [API Blueprint (⭐8.6k)](https://github.com/apiaryio/api-blueprint) - A powerful high-level language for designing and documenting APIs that allows software engineers to easily collaborate and create efficient APIs.
 - [AsyncAPI (⭐4.2k)](https://github.com/asyncapi/spec) - An essential tool for developing Event-Driven Architectures (EDA) and enables engineers to build a better tooling ecosystem.
+- [CloudEvents (⭐5.1k)](https://github.com/cloudevents/spec) -  A specification for describing event data in common formats to provide interoperability across services, platforms and systems.
 - [GraphQL (⭐14k)](https://github.com/graphql/graphql-spec) - A sophisticated query language and runtime for building efficient APIs that empowers engineers to retrieve data from existing systems with ease.
 - [JSON:API (⭐7.4k)](https://github.com/json-api/json-api) - A standardized specification for building APIs that simplifies the representation of resources, relationships, and metadata, making it easier for software engineers to create efficient APIs.
 - [OpenAPI (ex.Swagger) (⭐28k)](https://github.com/OAI/OpenAPI-Specification) - A language-agnostic specification for creating RESTful APIs that enables both humans and machines to understand the capabilities of a service without the need for source code or documentation.
 - [RAML (⭐3.8k)](https://github.com/raml-org/raml-spec) - A RESTful API Modeling Language that allows software engineers to design and create efficient APIs by modeling resources, endpoints, and interactions.
+- [Standard Webhooks (⭐1.3k)](https://github.com/standard-webhooks/standard-webhooks) - Open source tools and guidelines for sending webhooks easily, securely, and reliably.
 - [WSDL](http://www.w3.org/TR/wsdl20) - A powerful XML-based interface description language for SOAP-based services that enables software engineers to describe the functionality of a web service and automate the creation of client code.
 
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@@ -894,7 +896,6 @@ the Design of Network-based Software Architectures](https://www.ics.uci.edu/~fie
 - [JMS](https://javaee.github.io/jms-spec/) - A messaging API that enables Java applications to send and receive messages. JMS supports reliable messaging and is widely used in enterprise-level applications.
 - [ODBC](https://docs.microsoft.com/en-us/sql/odbc/reference/odbc-overview) - A widely accepted API that provides a standardized way to access data from various database management systems. ODBC offers a consistent interface to access data, making it easy to develop database applications.
 - [OData](https://www.odata.org/) - An open protocol that enables the creation and consumption of queryable and interoperable REST APIs. OData simplifies the development of REST APIs and offers a standardized way to access data.
-- [Standard Webhooks (⭐1.3k)](https://github.com/standard-webhooks/standard-webhooks) - Open source tools and guidelines for sending webhooks easily, securely, and reliably.
 
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