feat: Add HTTPX instrumentation to all (#1628)

* feat: Add HTTPX instrumentation to all

Now, HTTPX instrumentation will be automatically applied if the HTTPX
gem is installed in a user's environment.

* chore: Rubocop - alphabetize dependencies

Author: kaylareopelle

instrumentation/all/lib/opentelemetry/instrumentation/all.rb

@@ -18,6 +18,7 @@
 require 'opentelemetry-instrumentation-bunny'
 require 'opentelemetry-instrumentation-lmdb'
 require 'opentelemetry-instrumentation-http'
+require 'opentelemetry-instrumentation-httpx'
 require 'opentelemetry-instrumentation-koala'
 require 'opentelemetry-instrumentation-active_model_serializers'
 require 'opentelemetry-instrumentation-concurrent_ruby'

instrumentation/all/opentelemetry-instrumentation-all.gemspec

@@ -42,6 +42,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'opentelemetry-instrumentation-gruf', '~> 0.3.0'
   spec.add_dependency 'opentelemetry-instrumentation-http', '~> 0.25.0'
   spec.add_dependency 'opentelemetry-instrumentation-http_client', '~> 0.24.0'
+  spec.add_dependency 'opentelemetry-instrumentation-httpx', '~> 0.3.0'
   spec.add_dependency 'opentelemetry-instrumentation-koala', '~> 0.21.0'
   spec.add_dependency 'opentelemetry-instrumentation-lmdb', '~> 0.23.0'
   spec.add_dependency 'opentelemetry-instrumentation-mongo', '~> 0.23.0'