Add image index and pdf parse (#3956)

* feat: think tag parse

* feat: parse think tag test

* feat: pdf parse ux

* feat: doc2x parse

* perf: rewrite training mode setting

* feat: image parse queue

* perf: image index

* feat: image parse process

* feat: add init sh

* fix: ts

deploy/helm/fastgpt/templates/configmap-config.yaml

@@ -6,6 +6,7 @@ data:
         "openapiPrefix": "fastgpt",
         "vectorMaxProcess": 15,
         "qaMaxProcess": 15,
+        "vlmMaxProcess": 15,
         "pgHNSWEfSearch": 100
       },
       "llmModels": [