Add tilt dev setup

Author: sd109

Tiltfile

@@ -0,0 +1,39 @@
+# Toggles whether UI should be run locally using gradio hot-reloading
+# or should be included in the remote Helm install
+run_ui_locally = True
+
+# Tilt warns is if we try to use tilt against a cluster named 'production'
+# Use this line to allow it for now
+allow_k8s_contexts('production-llm-service-admin@production-llm-service')
+
+# TODO: Include image builds in tilt up
+# docker_build("images/ui-base/")
+
+chart_yaml = helm(
+    "chart/",
+    values="hu-dev-values.yml",
+    # Enable/disable remote UI install depending on if we're running it locally
+    set="ui.enabled={}".format(not str(run_ui_locally).lower()),
+)
+k8s_yaml(chart_yaml)
+
+if not run_ui_locally:
+    # Port-forward web app to localhost:8080
+    k8s_resource("chart-ui", port_forwards="8080:7680")
+
+# Port forward backend UI to localhost:8081 for local web app development
+k8s_resource("chart-api", port_forwards="8081:8000")
+
+if run_ui_locally:
+    requirements = "images/ui-base/requirements.txt"
+    # Run gradio app locally with hot-reloading
+    local_resource(
+        name="gradio-app",
+        deps=requirements,
+        serve_cmd="".join([
+            "source venv/bin/activate",
+            "&& pip install -r {}".format(requirements),
+            "&& cd chart/web-app",
+            "&& gradio app.py --demo-name app"
+        ])
+    )