Improve Solargraph LSP in our spec files

The main thing is that I was getting "RequireNotFound" warnings for
`require 'rails_helper'`, because the LSP seems unaware of how RSpec
offers `spec/` as a root for requires.

I think the `require_relative` is clearer anyway, I'm decently
satisfied with it. And if I decide it's too much ugly, we can try
something else in the Solargraph config or something sometime!

.gitignore

@@ -5,6 +5,7 @@ tmp/**/*
 .env
 .env.*
 /spec/examples.txt
+/.yardoc
 
 /app/assets/builds/*
 !/app/assets/builds/.keep

Gemfile

@@ -84,8 +84,10 @@ gem "sentry-rails", "~> 5.12"
 gem "shell", "~> 0.8.1"
 
 # For workspace autocomplete.
-gem "solargraph", "~> 0.50.0", group: :development
-gem "solargraph-rails", "~> 1.1", group: :development
+group :development do
+	gem "solargraph", "~> 0.50.0"
+	gem "solargraph-rails", "~> 1.1"
+end
 
 # For automated tests.
 group :development, :test do

spec/models/color_spec.rb

@@ -1,4 +1,4 @@
-require 'rails_helper'
+require_relative '../rails_helper'
 
 RSpec.describe Color do
 	fixtures :colors

spec/models/pet_spec.rb

@@ -1,4 +1,4 @@
-require 'rails_helper'
+require_relative '../rails_helper'
 require_relative '../support/mocks/custom_pets'
 require_relative '../support/matchers/a_record_matching'
 

spec/models/pet_type_spec.rb

@@ -1,4 +1,4 @@
-require 'rails_helper'
+require_relative '../rails_helper'
 
 RSpec.describe PetType do
 	fixtures :colors, :species, :pet_types

spec/models/species_spec.rb

@@ -1,4 +1,4 @@
-require 'rails_helper'
+require_relative '../rails_helper'
 
 RSpec.describe Species do
 	fixtures :species

spec/services/nc_mall_spec.rb

@@ -1,5 +1,5 @@
-require 'rails_helper'
 require 'webmock/rspec'
+require_relative '../rails_helper'
 
 RSpec.describe Neopets::NCMall, type: :model do
 	describe ".load_styles" do