Minor: Project logistics (#21)

* ignore folders
* add linux

Author: sayem314

.gitignore

@@ -2,3 +2,7 @@ _site/
 .sass-cache/
 .jekyll-cache/
 .jekyll-metadata
+
+# Ignore folders generated by Bundler
+.bundle/
+vendor/

Gemfile.lock

@@ -12,6 +12,7 @@ GEM
     ffi (1.15.5)
     forwardable-extended (2.6.0)
     google-protobuf (3.24.0-x86_64-darwin)
+    google-protobuf (3.24.0-x86_64-linux)
     http_parser.rb (0.8.0)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
@@ -66,6 +67,8 @@ GEM
     safe_yaml (1.0.5)
     sass-embedded (1.64.2-x86_64-darwin)
       google-protobuf (~> 3.23)
+    sass-embedded (1.64.2-x86_64-linux-gnu)
+      google-protobuf (~> 3.23)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     tzinfo (2.0.6)
@@ -78,6 +81,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-22
+  x86_64-linux
 
 DEPENDENCIES
   jekyll (~> 4.3)