Add development docs

docs/development/project-setup/dependencies.md

@@ -0,0 +1,17 @@
+## Project dependencies
+
+### Install Chatwoot Ruby dependencies
+
+Use the following command to install ruby dependencies.
+
+```bash
+bundle
+```
+
+### Install Chatwoot JavaScript dependencies
+
+```bash
+yarn
+```
+
+This would install all required dependencies for Chatwoot application.