feat: added phoronix benchmarking

docs/benchmarking/phoronix-test-suite.md

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+# Benchmarking using the Phoronix Test Suite
+
+The Phoronix benchmark suite does not require an introduction. More information here:
+<https://www.phoronix-test-suite.com/>
+
+## Install on Linux
+
+```shell
+wget -O- https://phoronix-test-suite.com/releases/phoronix-test-suite-10.8.4.tar.gz | tar xz
+cd phoronix-test-suite && sudo ./install-sh
+```
+
+Install dependancies:
+
+```shell
+sudo apt install -y php-cli php-xml pkg-config
+```
+
+## Basic benchmark
+
+For some quick basic system benchark you can use the following.
+Check the docs for more information: <https://github.com/phoronix-test-suite/phoronix-test-suite/blob/master/documentation/phoronix-test-suite.md>
+
+```shell
+phoronix-test-suite install fio sysbench
+```
+
+Setup the batch.
+
+```shell
+phoronix-test-suite batch-setup
+```
+
+Run the benchmark.
+
+```shell
+phoronix-test-suite batch-benchmark fio sysbench
+```
+
+## Results
+
+The results can be uploaded to the openbenchmark.org website for easy sharing.
+
+Example: <https://openbenchmarking.org/result/2511139-NE-2511132NE42>