docs: add experiment done using sorald

Author: algomaster99

experiments/sorald/App.java

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+public class App {
+    private int x;
+}

experiments/sorald/README.md

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+Since I was aware of a jar that was downloaded at runtime for `sorald`, I
+passed it while generating the fingerprints.
+
+```shell
+mvn clean \
+  install \
+  io.github.algomaster99:classfile-fingerprint:0.8.1-SNAPSHOT:generate \
+    -DexternalJars=$(realpath external-jars.json) \
+    -DskipUnitTests \
+    -DskipIntegrationTests 
+```
+
+Simply run the following command:
+
+```bash
+ java -javaagent:watchdog-agent-0.8.1-SNAPSHOT.jar=fingerprints=classfile.sha256.jsonl,skipShutdown=true  -jar sorald-0.8.5-jar-with-dependencies.jar mine --source App.java
+```
+
+### Reproduction details
+
+1. `maven`: Apache Maven 3.9.1 (2e178502fcdbffc201671fb2537d0cb4b4cc58f8)
+2. `java`: 17.0.5 oracle
+3. `OS`: Ubuntu 22.04
+4. `classfile-fingerprint`: `f38a62df1bbee4cb232c4fe4ccdf220e8ec50a60`
+5. `watchdog-agent`: `f38a62df1bbee4cb232c4fe4ccdf220e8ec50a60`
+6. `sorald/sorald`: `0.8.5`
+
+## Results
+
+After including the external jar while generating the fingerprints, I get the following errors when running the workloads:
+
+```text
+[NOT WHITELISTED]: org/sonarsource/sonarlint/shaded/org/springframework/core/$Proxy30
+```

experiments/sorald/classfile.sha256.jsonl

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+[
+  {
+    "path": "sonar-java-plugin-7.16.0.30901.jar"
+  }
+]