add Mars v2 interface (#744)

Tested on DO with real funds on mainnet

Co-authored-by: zramsay <zach@bluecollarcoding.ca>
Reviewed-on: cerc-io/stack-orchestrator#744

stack_orchestrator/data/stacks/mars-v2/README.md

@@ -0,0 +1,16 @@
+# mars
+
+On a fresh Digital Ocean droplet with Ubuntu:
+
+```
+git clone https://github.com/cerc-io/stack-orchestrator
+cd stack-orchestrator
+./scripts/quick-install-linux.sh
+```
+Read and follow the instructions output from the above output to complete installation, then:
+
+```
+laconic-so --stack mars-v2 setup-repositories
+laconic-so --stack mars-v2 build-containers
+laconic-so --stack mars-v2 deploy up
+```

stack_orchestrator/data/stacks/mars-v2/stack.yml

@@ -0,0 +1,8 @@
+version: "0.1"
+name: mars-v2
+repos:
+  - github.com/mars-protocol/mars-v2-frontend
+containers:
+  - cerc/mars-v2
+pods:
+  - mars-v2