tool-call: refactor common chat / tool-call api (+ tests / fixes) (#11900)

* tool-call refactoring: moved common_chat_* to chat.h, common_chat_templates_init return a unique_ptr to opaque type

* addressed clang-tidy lints in [test-]chat.*

* rm minja deps from util & common & move it to common/minja/

* add name & tool_call_id to common_chat_msg

* add common_chat_tool

* added json <-> tools, msgs conversions to chat.h

* fix double bos/eos jinja avoidance hack (was preventing inner bos/eos tokens)

* fix deepseek r1 slow test (no longer <think> opening w/ new template)

* allow empty tools w/ auto + grammar

* fix & test server grammar & json_schema params w/ & w/o --jinja

common/CMakeLists.txt

@@ -57,8 +57,7 @@ add_library(${TARGET} STATIC
     arg.h
     base64.hpp
     chat.cpp
-    chat.hpp
-    chat-template.hpp
+    chat.h
     common.cpp
     common.h
     console.cpp
@@ -68,7 +67,8 @@ add_library(${TARGET} STATIC
     llguidance.cpp
     log.cpp
     log.h
-    minja.hpp
+    minja/chat-template.hpp
+    minja/minja.hpp
     ngram-cache.cpp
     ngram-cache.h
     sampling.cpp