feat(eval api): (2.2/n) delete eval / scoring / scoring_fn apis (#1700)

# What does this PR do?
- To make it easier, delete existing `eval/scoring/scoring_function`
apis. There will be a bunch of broken impls here. The sequence is:
1. migrate benchmark graders
2. clean up existing scoring functions

- Add a skeleton evaluation impl to make tests pass. 

## Test Plan
tested in following PRs

[//]: # (## Documentation)

llama_stack/templates/nvidia/build.yaml

@@ -12,12 +12,8 @@ distribution_spec:
     - inline::meta-reference
     telemetry:
     - inline::meta-reference
-    eval:
-    - inline::meta-reference
     datasetio:
     - inline::localfs
-    scoring:
-    - inline::basic
     tool_runtime:
     - inline::rag-runtime
 image_type: conda

llama_stack/templates/nvidia/nvidia.py

@@ -6,11 +6,20 @@
 
 from pathlib import Path
 
-from llama_stack.distribution.datatypes import ModelInput, Provider, ShieldInput, ToolGroupInput
+from llama_stack.distribution.datatypes import (
+    ModelInput,
+    Provider,
+    ShieldInput,
+    ToolGroupInput,
+)
 from llama_stack.providers.remote.inference.nvidia import NVIDIAConfig
 from llama_stack.providers.remote.inference.nvidia.models import MODEL_ENTRIES
 from llama_stack.providers.remote.safety.nvidia import NVIDIASafetyConfig
-from llama_stack.templates.template import DistributionTemplate, RunConfigSettings, get_model_registry
+from llama_stack.templates.template import (
+    DistributionTemplate,
+    RunConfigSettings,
+    get_model_registry,
+)
 
 
 def get_distribution_template() -> DistributionTemplate:
@@ -20,9 +29,7 @@ def get_distribution_template() -> DistributionTemplate:
         "safety": ["remote::nvidia"],
         "agents": ["inline::meta-reference"],
         "telemetry": ["inline::meta-reference"],
-        "eval": ["inline::meta-reference"],
         "datasetio": ["inline::localfs"],
-        "scoring": ["inline::basic"],
         "tool_runtime": ["inline::rag-runtime"],
     }
 

llama_stack/templates/nvidia/run-with-safety.yaml

@@ -3,10 +3,8 @@ image_name: nvidia
 apis:
 - agents
 - datasetio
-- eval
 - inference
 - safety
-- scoring
 - telemetry
 - tool_runtime
 - vector_io
@@ -51,14 +49,6 @@ providers:
       service_name: ${env.OTEL_SERVICE_NAME:llama-stack}
       sinks: ${env.TELEMETRY_SINKS:console,sqlite}
       sqlite_db_path: ${env.SQLITE_DB_PATH:~/.llama/distributions/nvidia/trace_store.db}
-  eval:
-  - provider_id: meta-reference
-    provider_type: inline::meta-reference
-    config:
-      kvstore:
-        type: sqlite
-        namespace: null
-        db_path: ${env.SQLITE_STORE_DIR:~/.llama/distributions/nvidia}/meta_reference_eval.db
   datasetio:
   - provider_id: localfs
     provider_type: inline::localfs
@@ -67,10 +57,6 @@ providers:
         type: sqlite
         namespace: null
         db_path: ${env.SQLITE_STORE_DIR:~/.llama/distributions/nvidia}/localfs_datasetio.db
-  scoring:
-  - provider_id: basic
-    provider_type: inline::basic
-    config: {}
   tool_runtime:
   - provider_id: rag-runtime
     provider_type: inline::rag-runtime
@@ -92,7 +78,6 @@ shields:
   provider_id: nvidia
 vector_dbs: []
 datasets: []
-scoring_fns: []
 benchmarks: []
 tool_groups:
 - toolgroup_id: builtin::rag

llama_stack/templates/nvidia/run.yaml

@@ -3,10 +3,8 @@ image_name: nvidia
 apis:
 - agents
 - datasetio
-- eval
 - inference
 - safety
-- scoring
 - telemetry
 - tool_runtime
 - vector_io
@@ -46,14 +44,6 @@ providers:
       service_name: ${env.OTEL_SERVICE_NAME:llama-stack}
       sinks: ${env.TELEMETRY_SINKS:console,sqlite}
       sqlite_db_path: ${env.SQLITE_DB_PATH:~/.llama/distributions/nvidia/trace_store.db}
-  eval:
-  - provider_id: meta-reference
-    provider_type: inline::meta-reference
-    config:
-      kvstore:
-        type: sqlite
-        namespace: null
-        db_path: ${env.SQLITE_STORE_DIR:~/.llama/distributions/nvidia}/meta_reference_eval.db
   datasetio:
   - provider_id: localfs
     provider_type: inline::localfs
@@ -62,10 +52,6 @@ providers:
         type: sqlite
         namespace: null
         db_path: ${env.SQLITE_STORE_DIR:~/.llama/distributions/nvidia}/localfs_datasetio.db
-  scoring:
-  - provider_id: basic
-    provider_type: inline::basic
-    config: {}
   tool_runtime:
   - provider_id: rag-runtime
     provider_type: inline::rag-runtime
@@ -195,7 +181,6 @@ models:
 shields: []
 vector_dbs: []
 datasets: []
-scoring_fns: []
 benchmarks: []
 tool_groups:
 - toolgroup_id: builtin::rag