CI: Add automation for github assets publishing (#59491)

* Add github.star

# Conflicts:
#	.drone.star
#	.drone.yml

* Make step depend on fetch images

# Conflicts:
#	.drone.yml

* artifacts -> path

# Conflicts:
#	.drone.yml

* Add github token

# Conflicts:
#	.drone.yml

* Fix custom path

# Conflicts:
#	.drone.yml

* Add case where path is absent

# Conflicts:
#	.drone.yml

* Add GH_REGISTRY secret

# Conflicts:
#	.drone.yml

scripts/drone/pipelines/github.star

@@ -0,0 +1,36 @@
+load(
+    'scripts/drone/steps/lib.star',
+    'download_grabpl_step',
+    'publish_images_step',
+    'compile_build_cmd',
+    'fetch_images_step',
+    'publish_image',
+)
+
+load('scripts/drone/vault.star', 'from_secret')
+
+load(
+    'scripts/drone/utils/utils.star',
+    'pipeline',
+)
+
+def publish_github_step():
+    return {
+        'name': 'publish-github',
+        'image': publish_image,
+        'commands': ['./bin/build publish github --repo $${GH_REGISTRY} --create'],
+        'depends_on': ['fetch-images-enterprise2'],
+        'environment': {
+            'GH_TOKEN': from_secret('github_token'),
+            'GH_REGISTRY': from_secret('gh_registry'),
+        },
+    }
+
+def publish_github_pipeline(mode):
+    trigger = {
+        'event': ['promote'],
+        'target': [mode],
+    }
+    return [pipeline(
+        name='publish-github-{}'.format(mode), trigger=trigger, steps=[compile_build_cmd(), fetch_images_step('enterprise2'), publish_github_step()], edition="", environment = {'EDITION': 'enterprise2'}
+    ),]