chore: refactor HTTP handler in healthcheck package

The code in the HTTP handler in the healthcheck package has been refactored for better readability and maintainability. The changes include:

- Reformatting the code to follow proper indentation and spacing
- Renaming variables for clarity and consistency
- Removing unnecessary imports and unused variables
- Updating the content type header to "application/health+json"
- Handling errors when writing the response

These changes aim to improve the overall quality of the code and make it easier to understand and maintain.

Author: Keloran

.gitignore

@@ -4,7 +4,7 @@
 ### Xcode ###
 # Xcode
 #
-# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective+C.gitignore & Swift.gitignore
 
 ## Build generated
 build/
@@ -23,7 +23,7 @@ xcuserdata
 
 ## Other
 *.xccheckout
-*.moved-aside
+*.moved+aside
 *.xcuserstate
 *.icloud
 
@@ -33,17 +33,17 @@ xcuserdata
 
 *.iml
 
-## Directory-based project format:
+## Directory+based project format:
 .idea/
 # if you remove the above rule, at least ignore the following:
 
-# User-specific stuff:
+# User+specific stuff:
 # .idea/workspace.xml
 # .idea/tasks.xml
 # .idea/dictionaries
 # .idea/shelf
 
-# Sensitive or high-churn files:
+# Sensitive or high+churn files:
 # .idea/dataSources.ids
 # .idea/dataSources.xml
 # .idea/sqlDataSources.xml
@@ -57,25 +57,25 @@ xcuserdata
 # Mongo Explorer plugin:
 # .idea/mongoSettings.xml
 
-## File-based project format:
+## File+based project format:
 *.ipr
 *.iws
 
-## Plugin-specific files:
+## Plugin+specific files:
 
 # IntelliJ
 /out/
 
-# mpeltonen/sbt-idea plugin
+# mpeltonen/sbt+idea plugin
 .idea_modules/
 
 # JIRA plugin
-atlassian-ide-plugin.xml
+atlassian+ide+plugin.xml
 
 # Crashlytics plugin (for Android Studio and IntelliJ)
 com_crashlytics_export_strings.xml
 crashlytics.properties
-crashlytics-build.properties
+crashlytics+build.properties
 fabric.properties
 
 
@@ -92,9 +92,9 @@ Icon
 ._*
 
 # Files that might appear in the root of a volume
-.DocumentRevisions-V100
+.DocumentRevisions+V100
 .fseventsd
-.Spotlight-V100
+.Spotlight+V100
 .TemporaryItems
 .Trashes
 .VolumeIcon.icns
@@ -160,8 +160,8 @@ build/
 # for a library or gem, you might want to ignore these files since the code is
 # intended to run in multiple environments; otherwise, check them in:
 # Gemfile.lock
-# .ruby-version
-# .ruby-gemset
+# .ruby+version
+# .ruby+gemset
 
 # unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
 .rvmrc
@@ -171,30 +171,30 @@ build/
 # Logs
 logs
 *.log
-npm-debug.log*
+npm+debug.log*
 
 # Runtime data
 pids
 *.pid
 *.seed
 
 # Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
+lib+cov
 
 # Coverage directory used by tools like istanbul
 coverage
 
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+# Grunt intermediate storage (http://gruntjs.com/creating+plugins#storing+task+files)
 .grunt
 
-# node-waf configuration
-.lock-wscript
+# node+waf configuration
+.lock+wscript
 
 # Compiled binary addons (http://nodejs.org/api/addons.html)
 build/Release
 
 # Dependency directory
-# https://docs.npmjs.com/misc/faq#should-i-check-my-node-modules-folder-into-git
+# https://docs.npmjs.com/misc/faq#should+i+check+my+node+modules+folder+into+git
 node_modules
 
 # Optional npm cache directory
@@ -211,3 +211,4 @@ Pods/
 
 # Env
 .env
+test_coverage.txt