docs: add some examples, retrieving SBOMs and their information

modules/fetch/README.md

@@ -0,0 +1,39 @@
+Find SBOMs:
+
+```bash
+http GET localhost:8080/api/v1/sbom limit==5 offset==0
+```
+
+Retrieve SBOM:
+
+```bash
+http GET localhost:8080/sboms/1
+```
+
+Get SBOM packages:
+
+```bash
+http GET localhost:8080/api/v1/sbom/1/packages limit==5 offset==0
+```
+
+Get SBOM top-level packages:
+
+```bash
+http GET localhost:8080/api/v1/sbom/1/packages limit==5 offset==0 root==true
+```
+
+Get related packages:
+
+```bash
+http GET localhost:8080/api/v1/sbom/1/related limit==5 offset==0 reference==<purl>
+```
+
+You can add `which==<left|right>` to declare which side of the reference you want to search for.
+
+It also is possible to limit the search to a specific relationship type by providing `relationship==<relationship>`.
+
+For example:
+
+```bash
+http GET localhost:8080/api/v1/sbom/1/related limit==5 offset==0 reference==pkg://maven/com.redhat.quarkus.platform/[email protected]?repository_url=https://maven.repository.redhat.com/ga/&type=pom which==right
+```