Implement Chroma Support (#1)

README.md

frontend/src/components/DefaultChat/index.jsx

frontend/src/components/Modals/Keys.jsx

frontend/src/components/Modals/ManageWorkspace.jsx

...spaceChat/ChatContainer/ChatHistory/PromptReply/index.jsx

package.json

server/.env.example

server/.nvmrc

server/endpoints/chat.js

server/endpoints/system.js

server/endpoints/workspaces.js

server/index.js

server/models/documents.js

server/models/vectors.js

server/models/workspace.js

server/models/workspaceChats.js

server/package.json

server/utils/chats/commands/reset.js

server/utils/chats/index.js

server/utils/chroma/CHROMA_SETUP.md