feat: Updated arch-mojaloop-overview diagram for PI12 (#290)

- Added new CGS Handler for Central-Settlements
- Renamed "Selt Testing Toolkit" to "Testing Toolkit" (TTK)
- Removed PoC from TTK
- Removed "Future" from IaC and API Gateway
- Removed "KMS" until we have more clarity CQS stream
- Updated links, and added component doc for PI12

SUMMARY.md

@@ -31,7 +31,8 @@
     * [Documentation Style Guide](contributors-guide/documentation/documentation-style-guide.md)
 * [Mojaloop Technical Overview](mojaloop-technical-overview/README.md)
   * [Mojaloop Hub](mojaloop-technical-overview/overview/README.md)
-    * [Current Architecture - PI11](mojaloop-technical-overview/overview/components-PI11.md)
+    * [Current Architecture - PI12](mojaloop-technical-overview/overview/components-PI12.md)
+    * [Legacy Architecture - PI11](mojaloop-technical-overview/overview/components-PI11.md)
     * [Legacy Architecture - PI8](mojaloop-technical-overview/overview/components-PI8.md)
     * [Legacy Architecture - PI7](mojaloop-technical-overview/overview/components-PI7.md)
     * [Legacy Architecture - PI6](mojaloop-technical-overview/overview/components-PI6.md)

mojaloop-technical-overview/overview/README.md

@@ -4,7 +4,7 @@ There are several components that make up the Mojaloop ecosystem. The Mojaloop H
 
 The following component diagram shows the break-down of the Mojaloop services and its micro-service architecture: 
 
-![Current Mojaloop Architecture Overview](./assets/diagrams/architecture/Arch-Mojaloop-overview-PI11.svg)
+![Current Mojaloop Architecture Overview](./assets/diagrams/architecture/Arch-Mojaloop-overview-PI12.svg)
 
 _Note: Colour-grading indicates the relationship between data-store, and message-streaming / adapter-interconnects. E.g. `Central-Services` utilise `MySQL` as a Data-store, and leverage on `Kafka` for Messaging_
 

mojaloop-technical-overview/overview/components-PI12.md

@@ -0,0 +1,7 @@
+# Mojaloop Hub Current Components - PI12
+
+The following component diagram shows the break-down of the Mojaloop services and its micro-service architecture for pre PI12:
+
+![Mojaloop Architecture Overview PI12](./assets/diagrams/architecture/Arch-Mojaloop-overview-PI12.svg)
+
+_Note: Colour-grading indicates the relationship between data-store, and message-streaming / adapter-interconnects. E.g. `Central-Services` utilise `MySQL` as a Data-store, and leverage on `Kafka` for Messaging_