Install devchat without binary dependencies.

Author: yangbobo2021

no_binary_install.sh

@@ -0,0 +1,7 @@
+set -e
+
+pip install --no-binary :all: "pydantic<2"
+pip install charset-normalizer --no-binary :all:
+pip install git+https://github.com/yangbobo2021/tiktoken.git
+pip install .
+python -c "import site; print(site.getsitepackages())"