Add .bundle dir for Github tests to work proper

.bundle/gemfile

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+source 'https://rubygems.org'
+
+gem 'rubocop', '1.46.0'
+gem 'json', '2.6.3'

.bundle/gemfile.lock

@@ -0,0 +1,35 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    json (2.6.3)
+    parallel (1.22.1)
+    parser (3.2.1.0)
+      ast (~> 2.4.1)
+    rainbow (3.1.1)
+    regexp_parser (2.7.0)
+    rexml (3.2.5)
+    rubocop (1.46.0)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.2.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.26.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.26.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.11.0)
+    unicode-display_width (2.4.2)
+
+PLATFORMS
+  x64-mingw-ucrt
+
+DEPENDENCIES
+  json (= 2.6.3)
+  rubocop (= 1.46.0)
+
+BUNDLED WITH
+   2.4.6

.gitignore

@@ -39,7 +39,6 @@ build-iPhoneSimulator/
 /rdoc/
 
 ## Environment normalization:
-/.bundle/
 /vendor/bundle
 /lib/bundler/man/