adding resources and page for testbenches doc

doc/TESTBenches.md

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+
+## Table of Contents ##
+
+1.   [Legacy 1 Bench](#legacy-1-bench)
+2.   [Legacy 2 Bench](#legacy-2-bench)
+3.   [Next Bench for DEV](#next-bench-for-dev)
+4.   [Next Bench for CI](#next-bench-for-ci)
+5.   [Live Network Bench](#live-network-bench)
+6.   [Multi-RRU Bench](#multi-rru-bench)
+
+
+## Legacy 1 Bench
+
+![image info](./testbenches_doc_resources/legacy1.jpg)
+
+## Legacy 2 Bench
+
+![image info](./testbenches_doc_resources/legacy2.jpg)
+
+## Next Bench for DEV
+
+![image info](./testbenches_doc_resources/next_dev.jpg)
+
+## Next Bench for CI
+
+![image info](./testbenches_doc_resources/next_ci.jpg)
+
+## Live Network Bench
+
+![image info](./testbenches_doc_resources/live_network.jpg)
+
+## Multi-RRU Bench
+
+![image info](./testbenches_doc_resources/multi_rru.jpg)