Moved Sodo-Search into apps/

refs https://github.com/TryGhost/Toolbox/issues/594

- this is the first of a set of commits to move our "apps" into the
  `apps/` folder, so we don't mix Ghost core and standalone apps

.github/dev.js

@@ -115,7 +115,7 @@ if (DASH_DASH_ARGS.includes('search') || DASH_DASH_ARGS.includes('all')) {
     commands.push({
         name: 'search',
         command: 'yarn dev',
-        cwd: path.resolve(__dirname, '../ghost/sodo-search'),
+        cwd: path.resolve(__dirname, '../apps/sodo-search'),
         prefixColor: '#23de43',
         env: {}
     });

.gitignore

@@ -130,8 +130,8 @@ Caddyfile
 /ghost/portal/umd
 
 # Sodo-Search
-/ghost/sodo-search/public/main.css
+/apps/sodo-search/public/main.css
-/ghost/sodo-search/umd
+/apps/sodo-search/umd
 
 # Signup Form and local environments
 /ghost/signup-form/umd
@@ -144,10 +144,11 @@ Caddyfile
 /ghost/announcement-bar/umd
 
 # Build files
+/apps/*/build
 /ghost/*/build
 
 # Typescript build artifacts
-/ghost/*/tsconfig.tsbuildinfo
+tsconfig.tsbuildinfo
 
 # Admin X
 /ghost/admin-x-settings/dist