Adding solargraph to support LSP for Ruby (#15484)

* Adding solargraph to support LSP for Ruby

[Solargraph](https://github.com/castwide/solargraph) is a Language
Server Protocol (LSP) implementation for Ruby.

LSP provides Integrated Development Environment (IDE) features.  There
are a list of plugins for various editors.

By including Solargraph, those using LSP enabled tools have a rich suite
of tools available for them.

In Emacs land I'm using lsp-mode.el.  There are plugins/extensions for
VS Code, Atom, and Vim.  (see the Solargraph URL for details).

* Further documenting solargraph

Really, just want to nudge Travis

Gemfile

@@ -133,6 +133,7 @@ group :development do
   gem "i18n-tasks", "~> 0.9.35" # Helpers to find and manage missing and unused translations
   gem "listen", "~> 3.7", require: false # Helps 'listen' to file system modifications events (also used by other gems like guard)
   gem "memory_profiler", "~> 1.0", require: false # Memory profiling routines for Ruby 2.3+
+  gem "solargraph", "~> 0.44", require: false # For LSP support (such as symbol renaming, documentation lookup)
   gem "web-console", "~> 4.2" # Rails Console on the Browser
 end
 

Gemfile.lock

@@ -106,7 +106,9 @@ GEM
       descendants_tracker (~> 0.0.4)
       ice_nine (~> 0.11.0)
       thread_safe (~> 0.3, >= 0.3.1)
+    backport (1.2.0)
     bcrypt (3.1.16)
+    benchmark (0.2.0)
     benchmark-ips (2.9.1)
     better_errors (2.9.1)
       coderay (>= 1.0.0)
@@ -229,6 +231,7 @@ GEM
     dotenv-rails (2.7.6)
       dotenv (= 2.7.6)
       railties (>= 3.2)
+    e2mmap (0.1.0)
     easy_translate (0.5.1)
       thread
       thread_safe
@@ -339,8 +342,6 @@ GEM
     globalid (0.5.2)
       activesupport (>= 5.0)
     google-protobuf (3.19.1)
-    google-protobuf (3.19.1-x86_64-darwin)
-    google-protobuf (3.19.1-x86_64-linux)
     guard (2.18.0)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
@@ -419,6 +420,7 @@ GEM
     ipaddress (0.8.3)
     irb (1.3.7)
       reline (>= 0.2.7)
+    jaro_winkler (1.5.4)
     jbuilder (2.11.3)
       activesupport (>= 5.0.0)
     jquery-fileupload-rails (0.4.7)
@@ -447,6 +449,10 @@ GEM
       execjs (~> 2.7)
     knapsack_pro (3.1.3)
       rake
+    kramdown (2.3.1)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
     launchy (2.5.0)
       addressable (~> 2.7)
     libhoney (1.21.0)
@@ -499,12 +505,6 @@ GEM
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
-    nokogiri (1.12.5-arm64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.12.5-x86_64-darwin)
-      racc (~> 1.4)
-    nokogiri (1.12.5-x86_64-linux)
-      racc (~> 1.4)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
@@ -783,6 +783,21 @@ GEM
     simplecov_json_formatter (0.1.2)
     slack-notifier (2.4.0)
     smart_properties (1.15.0)
+    solargraph (0.44.1)
+      backport (~> 1.2)
+      benchmark
+      bundler (>= 1.17.2)
+      diff-lcs (~> 1.4)
+      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)
     spring (3.0.0)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
@@ -884,6 +899,7 @@ GEM
       activerecord (>= 5.2)
     xpath (3.2.0)
       nokogiri (~> 1.8)
+    yard (0.9.26)
     zeitwerk (2.5.1)
     zonebie (0.6.1)
 
@@ -1023,6 +1039,7 @@ DEPENDENCIES
   sidekiq-unique-jobs (~> 7.1.8)
   simplecov (~> 0.21.2)
   slack-notifier (~> 2.4)
+  solargraph (~> 0.44)
   spring (~> 3.0)
   spring-commands-rspec (~> 1.0)
   sprockets (~> 4.0)