feat: add libraries to gemfile

Gemfile

@@ -16,4 +16,5 @@ group :development, :test do
   gem "pry-doc"
   gem "rspec", "~> 3.0"
   gem "rubocop", "~> 1.21"
+  gem "solargraph"
 end

Gemfile.lock

@@ -29,15 +29,27 @@ GEM
       aws-sigv4 (~> 1.1)
     aws-sigv4 (1.4.0)
       aws-eventstream (~> 1, >= 1.0.2)
+    backport (1.2.0)
+    benchmark (0.2.0)
     coderay (1.1.3)
     concurrent-ruby (1.1.9)
     diff-lcs (1.3)
+    e2mmap (0.1.0)
     i18n (1.10.0)
       concurrent-ruby (~> 1.0)
+    jaro_winkler (1.5.4)
     jmespath (1.5.0)
+    kramdown (2.3.2)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     logger (1.3.0)
     method_source (1.0.0)
     minitest (5.15.0)
+    nokogiri (1.13.3-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.13.3-x86_64-linux)
+      racc (~> 1.4)
     parallel (1.21.0)
     parser (3.0.2.0)
       ast (~> 2.4.1)
@@ -47,9 +59,12 @@ GEM
     pry-doc (1.3.0)
       pry (~> 0.11)
       yard (~> 0.9.11)
+    racc (1.6.0)
     rainbow (3.0.0)
     rake (13.0.6)
     regexp_parser (2.1.1)
+    reverse_markdown (2.1.1)
+      nokogiri
     rexml (3.2.5)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
@@ -76,7 +91,23 @@ GEM
     rubocop-ast (1.12.0)
       parser (>= 3.0.1.1)
     ruby-progressbar (1.11.0)
+    solargraph (0.41.2)
+      backport (~> 1.1)
+      benchmark
+      bundler (>= 1.17.2)
+      e2mmap
+      jaro_winkler (~> 1.5)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.1)
+      parser (~> 3.0)
+      reverse_markdown (>= 1.0.5, < 3)
+      rubocop (>= 0.52)
+      thor (~> 1.0)
+      tilt (~> 2.0)
+      yard (~> 0.9, >= 0.9.24)
+    thor (1.2.1)
     thread_safe (0.3.6)
+    tilt (2.0.10)
     tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unicode-display_width (2.1.0)
@@ -99,6 +130,7 @@ DEPENDENCIES
   rake (~> 13.0)
   rspec (~> 3.0)
   rubocop (~> 1.21)
+  solargraph
 
 BUNDLED WITH
    2.3.9