Add pipeline script for create_release_notes and link to master instead of backport issue

[smlambert]

Fixes #228
Fixes #200

[smlambert]

Testing via https://ci.adoptium.net/job/build-scripts/job/release/job/create_rel_notes_v2/

json produced the original job:
https://ci.adoptium.net/job/build-scripts/job/release/job/create_release_notes/172/artifact/generate-release-notes/generate-release-notes/OpenJDK11U-jdk-release-notes_11.0.32.1_01.json/*view*/

json produced via this PR:
https://ci.adoptium.net/job/build-scripts/job/release/job/create_rel_notes_v2/13/artifact/OpenJDK11-jdk-release-notes_11.0.32.1_1.json/*view*/

Not sure its quite right 'yet', when we link to the master issue, should we be changing type and backportOf values.

Old:
  {
    "id": "JDK-8390612",
    "title": "Update FreeType to 2.14.3",
    "priority": "3",
    "component": "client-libs",
    "subcomponent": "client-libs/2d",
    "link": "https://bugs.openjdk.java.net/browse/JDK-8390612",
    "type": "Backport",
    "backportOf": "JDK-8385390"
  }

New:
 {
    "id": "JDK-8385390",
    "title": "Update FreeType to 2.14.3",
    "priority": "3",
    "component": "client-libs",
    "subcomponent": "client-libs/2d",
    "link": "https://bugs.openjdk.org/browse/JDK-8385390",
    "type": "Backport",
    "backportOf": "JDK-8385390"
  }