Add mongodb + rabbitmq docs (#2051)

## Summary

Add documentation for RabbitMQ + MongoD

## How was it tested?

Localhost + `npm run build` to test broken links

Author: Lagoja

docs/app/docs/devbox_examples/databases/mongodb.md

@@ -0,0 +1,62 @@
+---
+title: MongoDB
+---
+
+MongoDB is a popular NoSQL database that is available on Nixpkgs. You can configure MongoDB for your Devbox project by using our official [MongoDB Plugin](https://github.com/jetify-com/devbox-plugins/tree/main/mongodb).
+
+## Adding MongoDB to your Shell
+
+You can start by adding the mongodb server to your project by running `devbox add mongodb`. We also recommend adding the MongoDB shell for interacting with your database using `devbox add mongosh`: 
+
+```json
+    "packages": [
+        "mongodb@latest",
+        "mongosh@latest",
+    ]
+```
+
+You can add the MongoDB Plugin to your `devbox.json` by adding it to your `include` list:
+
+```json
+    "include": [
+        "github:jetify-com/devbox-plugins?dir=mongodb"
+    ]
+```
+
+Adding these packages and the plugin will configure Devbox for working with MongoDB. 
+
+## Starting the MongoDB Service
+
+The MongoDB plugin will automatically create a service for you that can be run with `devbox services up`. The process-compose.yaml for this default service is shown below:
+
+```yaml
+processes:
+  mongodb:
+    command: "mongod --config=$MONGODB_CONFIG --dbpath=$MONGODB_DATA --bind_ip_all"
+    availability:
+      restart: on_failure
+      max_restarts: 5
+```
+
+You can configure this service by modifying the environment variable shown below. 
+
+If you want to create your own version of the mongodb service, you can create a process-compose.yaml in your project's root, and define a new process named `mongodb`. For more details, see the [process-compose documentation](https://f1bonacc1.github.io/process-compose/)
+
+### Environment Variables
+
+The MongoDB plugin will configure the following environment variables
+
+```bash
+MONGODB_CONFIG = ./devbox.d/mongodb/mongod.conf
+# Tells Devbox where to look for your mongod.conf file
+MONGODB_DATA = ./devbox/virtenv/mongodb/data
+# Tells Devbox where MongoDB's data directory should be located
+```
+
+You can override the default values of these variables using the `env` section of your devbox.json file.
+
+### Files
+
+The plugin will also create a default [`mongod.conf`] file in your `devbox.d` directory, if one doesn't already exist there. This default file mostly serves as a placeholder, and you can modify it as needed.
+
+For a full list of configuration options, see the [MongoDB documentation](https://www.mongodb.com/docs/v6.0/reference/configuration-options/)

docs/app/docs/devbox_examples/databases/rabbitmq.md

@@ -0,0 +1,76 @@
+---
+title: RabbitMQ
+---
+
+RabbitMQ is a reliable message and streaming broker. You can configure RabbitMQ for your Devbox project by using our official [RabbitMQ Plugin](https://github.com/jetify-com/devbox-plugins/tree/main/rabbitmq)
+
+## Adding RabbitMQ to your shell
+
+You can start by adding the RabbitMQ server to your project by running `devbox add rabbitmq-server`.
+
+```json
+    "packages": [
+        "rabbitmq-server@latest"
+    ]
+```
+
+You can then add the RabbitMQ Plugin to your devbox.json by adding it to your `include` list:
+
+```json
+    "include": [
+        "github:jetify-com/devbox-plugins?dir=rabbitmq"
+    ]
+```
+
+Adding these packages and the plugin will configure Devbox for working with RabbitMQ.
+
+## Starting the RabbitMQ Service
+
+The RabbitMQ plugin will automatically create a service for you that can be run with `devbox service up`. The process-compose.yaml for this service is shown below:
+
+```yaml
+processes:
+  rabbitmq:
+    command: "rabbitmq-server"
+    availability:
+      restart: on_failure
+      max_restarts: 5
+    daemon: true
+    shutdown:
+      command: "rabbitmqctl shutdown"
+  rabbitmq-logs:
+    command: "tail -f $RABBITMQ_LOG_BASE/$RABBITMQ_NODENAME@$(hostname -s).log"
+    availability:
+      restart: "always"
+```
+
+The `rabbitmq` process starts the server as a daemon in the background, and shuts it down whenever you terminate process compose. The `rabbitmq-logs` service will tail the logs of process-compose, and display them in the process-compose UI. You can configure the services by modifying the environment variables as described below.
+
+If you want to create your own version of the mongodb service, you can create a process-compose.yaml in your project's root, and define a new process named `rabbitmq`. For more details, see the [process-compose documentation](https://f1bonacc1.github.io/process-compose/)
+
+## Environment Variables
+
+The plugin will create the following environment variables:
+
+```bash
+RABBITMQ_CONFIG_FILE = {{.DevboxDir}}/conf.d
+# Points to the directory containing your rabbitmq.conf file
+RABBITMQ_MNESIA_BASE = {{.Virtenv}}/mnesia
+# Points to the directory where your node database store, and state files will be kept. Changing this variable is not recommended
+RABBITMQ_ENABLED_PLUGINS_FILE = {{.DevboxDir}}/conf.d/enabled_plugins
+# Tells rabbit mq where to store the file with your enabled plugins
+RABBITMQ_LOG_BASE = {{.Virtenv}}/log
+# Where the logs for your RabbitMQ instance will be stored
+RABBITMQ_NODENAME = rabbit
+# Default nodename for your rabbitmq instance. This variable is used in other settings
+RABBITMQ_PID_FILE = {{.Virtenv}}/pid/$RABBITMQ_NODENAME.pid
+# Creates RabbitMQ's pidfile in a local directory for your project. Changing this is not recommended.
+```
+
+You can override the default values of these variables using the `env` section of your `devbox.json` file. For a full list of environment variables used by RabbitMQ, see the [RabbitMQ Configuration Docs](https://www.rabbitmq.com/docs/configure#customise-environment).
+
+## Files
+
+The plugin will also create a default [`rabbitmq.conf`](https://github.com/jetify-com/devbox-plugins/blob/main/rabbitmq/config/rabbitmq.conf) file in your devbox.d directory, if one doesn't already exist there. This default file serves as a starting point, and you can modify it as needed.
+
+For a full list of configuration options, see the [RabbitMQ Configuration Docs](https://www.rabbitmq.com/docs/configure)