Add harness api docs

.github/workflows/api_docs.yml

@@ -9,8 +9,6 @@ on:
       - main
       # release branches have the form v1.9.x
       - "v[0-9]+.[0-9]+.x"
-      # Exclude 1.x release branches, there's another workflow handling those
-      - "!v1.[0-9]+.x"
 
 env:
   HATCH_VERSION: "1.9.3"

docs/pydoc/config/harness.yml

@@ -0,0 +1,32 @@
+loaders:
+  - type: haystack_pydoc_tools.loaders.CustomPythonLoader
+    search_path: [../../../haystack_experimental/evaluation]
+    modules: ["harness/evaluation_harness",
+              "harness/rag/harness",
+              "harness/rag/evaluation_pipeline",
+              "harness/rag/parameters",
+              "util/pipeline_pair",
+              "util/helpers"]
+    ignore_when_discovered: ["__init__"]
+processors:
+  - type: filter
+    expression:
+    documented_only: true
+    do_not_filter_modules: false
+    skip_empty_modules: true
+  - type: smart
+  - type: crossref
+renderer:
+  type: haystack_pydoc_tools.renderers.ReadmeCoreRenderer
+  excerpt: Evaluation harness for Haystack.
+  category_slug: experiments-api
+  title: Evaluation Harness
+  slug: evaluation-harness
+  order: 50
+  markdown:
+    descriptive_class_title: false
+    classdef_code_block: false
+    descriptive_module_title: true
+    add_method_class_prefix: true
+    add_member_class_prefix: false
+    filename: evaluation_harness.md