Adds ansible playbook for foundry setup

Currently, running the playbook will:
- Install dependencies (Caddy, nodejs, unzip)
- Create a foundry user
- Extract foundry app into folder on server
- Update Caddyfile with reverse proxt config

TODO:
- unit file for foundry itself
- data directory

foundry_playbook.yml

@@ -0,0 +1,51 @@
+---
+- name: Fountry VTT installation
+  hosts: all
+  remote_user: root
+  vars_files:
+    - ./variables.yml
+  environment:
+    DATA_DIRECTORY: /home/foundry/data
+  tasks:
+    - name: Apt repos
+      shell: |
+        curl -fsSL https://deb.nodesource.com/setup_14.x | sudo -E bash -
+        curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo apt-key add -
+        curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee -a /etc/apt/sources.list.d/caddy-stable.list
+    - name: Dependencies
+      apt:
+        update_cache: yes
+        pkg:
+        - unzip
+        - nodejs
+        - caddy
+    - name: Foundry group
+      group:
+        name: foundry
+        state: present
+    - name: Foundry user
+      user:
+        name: foundry
+        group: foundry
+        shell: /bin/bash
+    - name: Foundry install directory
+      file:
+        path: /home/foundry/foundry_app
+        state: directory
+        owner: foundry
+        group: foundry
+        mode: '0644'
+    - name: Foundry archive
+      unarchive:
+        src: ./foundryvtt.zip
+        dest: /home/foundry/foundry_app
+        owner: foundry
+        group: foundry
+        mode: '0644'
+    - name: Caddyfile
+      template:
+        src: ./Caddyfile.j2
+        dest: /etc/caddy/Caddyfile
+        owner: root
+        group: root
+        mode: '0644'