chore: merge Added Temperature Conversions to Javascript (#705)

* Added Temperature Conversions to Javascript

I added a file which contains essential conversions needed to swap temperature units to one another.
Hope you like it :)

* Update Conversions/TemperatureConversion.js

Suggestions saved

Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>

* Added test file 

"test" folder was created and tests required for "TemperatureConversions" was added to it

* Fixed minor syntax errors

* Update Conversions/test/TemperatureConversion.test.js

Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>

* Formatted TemperatureConversion.js 

The code was modified to comply with rules and styes recommended by the repository

* Formatted TemperatureConversion.test.js 

The code was modified to comply with rules and styes recommended by the repository

* Reformatted :) 

Hope this passes the test :)

Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>