add linux/unix distribution template table

Signed-off-by: Christine Dodrill <me@christine.website>

migrations/2021-06-18-234254_templates/down.sql

@@ -0,0 +1 @@
+DROP TABLE templates;

migrations/2021-06-18-234254_templates/up.sql

@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS templates
+  ( uuid         TEXT UNIQUE NOT NULL PRIMARY KEY
+  , "name"       TEXT UNIQUE NOT NULL
+  , distro       TEXT        NOT NULL
+  , version      TEXT        NOT NULL
+  , download_url TEXT        NOT NULL
+  , sha256sum    TEXT        NOT NULL
+  , local_url    TEXT        NOT NULL
+  );

src/schema.rs

@@ -18,9 +18,22 @@ table! {
     }
 }
 
+table! {
+    templates (uuid) {
+        uuid -> Text,
+        name -> Text,
+        distro -> Text,
+        version -> Text,
+        download_url -> Text,
+        sha256sum -> Text,
+        local_url -> Text,
+    }
+}
+
 joinable!(instances -> connections (owner));
 
 allow_tables_to_appear_in_same_query!(
     connections,
     instances,
+    templates,
 );