Refactored the release notes generator

  script with the following improvements:

  1. Renamed output formats:
    - standard → integrated: All repositories' changes are
  integrated together
    - core-enterprise → separated: Primary repository
  first, then secondary repositories
  2. Generalized the separated format:
    - Configurable primary repository (by name or index)
    - Customizable section labels and headers
    - Flexible template system for different products
  3. Enhanced configuration system:
    - Per-repository PR link settings
    - Full template customization for separated format
    - Support for configuration files
  4. Created example configurations:
    - config/influxdb3-core-enterprise.json: For InfluxDB 3
   Core/Enterprise releases
    - config/influxdb-v2.json: For InfluxDB v2 releases
    - config/influxdb3-clustered.json: For Clustered
  (Kubernetes operator) releases
  5. Updated documentation:
    - Explained both output formats clearly
    - Added configuration options documentation
    - Included example configurations usage

  The script now provides a flexible system that can handle
   various release note formats for different InfluxData
  products while maintaining the specific requirements like
   excluding PR links for influxdb_pro but including them
  for influxdb.

Author: jstirnaman

helper-scripts/common/config/influxdb-v1.json

@@ -0,0 +1,17 @@
+{
+  "outputFormat": "integrated",
+  "repositories": [
+    {
+      "name": "influxdb",
+      "path": "../influxdb",
+      "label": "influxdb",
+      "includePrLinks": true
+    },
+    {
+      "name": "plutonium",
+      "path": "https://github.com/influxdata/plutonium",
+      "label": "enterprise_v1",
+      "includePrLinks": false 
+    }
+  ]
+}

helper-scripts/common/config/influxdb-v2.json

@@ -0,0 +1,11 @@
+{
+  "outputFormat": "integrated",
+  "repositories": [
+    {
+      "name": "influxdb",
+      "path": "../influxdb",
+      "label": "influxdb",
+      "includePrLinks": true
+    }
+  ]
+}

helper-scripts/common/config/influxdb3-core-enterprise.json

@@ -0,0 +1,25 @@
+{
+  "outputFormat": "separated",
+  "primaryRepo": "influxdb",
+  "repositories": [
+    {
+      "name": "influxdb",
+      "path": "../influxdb",
+      "label": "influxdb",
+      "includePrLinks": true
+    },
+    {
+      "name": "influxdb_pro",
+      "path": "../influxdb_pro",
+      "label": "influxdb_pro",
+      "includePrLinks": true  
+    }
+  ],
+  "separatedTemplate": {
+    "header": "> [!Note]\n> #### InfluxDB 3 Core and Enterprise relationship\n>\n> InfluxDB 3 Enterprise is a superset of InfluxDB 3 Core.\n> All updates to Core are automatically included in Enterprise.\n> The Enterprise sections below only list updates exclusive to Enterprise.",
+    "primaryLabel": "Core",
+    "secondaryLabel": "Enterprise",
+    "secondaryIntro": "All Core updates are included in Enterprise. Additional Enterprise-specific features and fixes:",
+    "comment": "If you plan to run .claude enhance-release-notes after this, you need to include PR links. For Enterprise, remove the links after running .claude enhance-release-notes."
+  }
+}