ci(releaser): github workflow for signoz releases (#6719)

### Summary

- github workflow for automated SigNoz releases

Signed-off-by: Prashant Shahi <prashant@signoz.io>

.github/workflows/releaser.yaml

@@ -0,0 +1,16 @@
+name: releaser
+
+on:
+  # schedule every wednesday 9:30 AM UTC (3pm IST)
+  schedule:
+    - cron: '30 9 * * 3'
+
+  # allow manual triggering of the workflow by a maintainer with no inputs
+  workflow_dispatch: {}
+
+jobs:
+  releaser:
+    uses: signoz/primus.workflows/.github/workflows/releaser-signoz.yaml@feat/releaser-signoz
+    secrets: inherit
+    with:
+      PRIMUS_REF: feat/signoz-releaser