feat:embedding api

1.embedding_engine add source_reader param
2.docs update
3.fix chroma exit bug

docs/getting_started/getting_started.md

@@ -25,22 +25,25 @@ $ docker run --name=mysql -p 3306:3306 -e MYSQL_ROOT_PASSWORD=aa12345678 -dit my
 We use [Chroma embedding database](https://github.com/chroma-core/chroma) as the default for our vector database, so there is no need for special installation. If you choose to connect to other databases, you can follow our tutorial for installation and configuration. 
 For the entire installation process of DB-GPT, we use the miniconda3 virtual environment. Create a virtual environment and install the Python dependencies.
 
-```{tip}
+```bash
 python>=3.10
 conda create -n dbgpt_env python=3.10
 conda activate dbgpt_env
 pip install -r requirements.txt
 ```
 Before use DB-GPT Knowledge Management
-```{tip}
+```bash
 python -m spacy download zh_core_web_sm
 
 ```
 
 Once the environment is installed, we have to create a new folder "models" in the DB-GPT project, and then we can put all the models downloaded from huggingface in this directory
 
-Notice make sure you have install git-lfs
 ```{tip}
+Notice make sure you have install git-lfs
+```
+
+```bash
 git clone https://huggingface.co/Tribbiani/vicuna-13b 
 git clone https://huggingface.co/sentence-transformers/all-MiniLM-L6-v2
 git clone https://huggingface.co/GanymedeNil/text2vec-large-chinese

docs/getting_started/installation.md

@@ -4,11 +4,13 @@ DB-GPT provides a third-party Python API package that you can integrate into you
 ### Installation from Pip
 
 You can simply pip install:
-```{tip}
+```bash
 pip install -i https://pypi.org/ db-gpt==0.3.0
 ```
-Notice:make sure python>=3.10
 
+```{tip}
+Notice:make sure python>=3.10
+```
 
 ### Environment Setup
 
@@ -16,8 +18,11 @@ By default, if you use the EmbeddingEngine api
 
 you will prepare embedding models from huggingface
 
-Notice make sure you have install git-lfs
 ```{tip}
+Notice make sure you have install git-lfs
+```
+
+```bash
 git clone https://huggingface.co/sentence-transformers/all-MiniLM-L6-v2
 
 git clone https://huggingface.co/GanymedeNil/text2vec-large-chinese