Add release process

Author: MariusBrill

.release-it.json

@@ -0,0 +1,12 @@
+{
+    "github": {
+      "release": false
+    },
+    "npm": {
+      "publish": false
+    },
+    "hooks": {
+      "after:bump":
+        "rm -r dist; yarn build; npx @grafana/toolkit plugin:sign; cp -r dist novatec-sdg-panel; mkdir -p releases; zip -r releases/novatec-sdg-panel.zip novatec-sdg-panel; rm -r novatec-sdg-panel"
+    }
+  }

README.md

@@ -116,7 +116,7 @@ Now, the panel's `Data Mappings` option `Response Time Column` is set to `resp_t
 
 ___
 
-### Service Icons
+## Service Icons
 
 The service dependency graph plugin allows you to display your own symbols in the drawn nodes.
 For this purpose the option 'Service Icon Mapping' can be used.
@@ -161,6 +161,17 @@ The curly brackets `{}` will be replaced with the selected node.
 
 ___
 
+## Create a Release
+
+To create a release bundle, ensure `release-it` is installed:
+```
+npm install --global release-it
+```
+To build a release bundle:
+```
+release-it [--no-git.requireCleanWorkingDir]
+```
+
 ### Found a bug? Have a question? Wanting to contribute?
 
 Feel free to open up an issue. We will take care of you and provide as much help as needed. Any suggestions/contributions are being very much appreciated.