Merges Spinwarder+Interslavic, Chitinclick+Buzzwords (#4527)

## About The Pull Request
Merges Chitinclick and Buzzwords into one language, as well as
Interslavic and Spinwarder, as they overlap with each other.

## Why It's Good For The Game
These languages are effectively the same, and we want players taking
these languages to be able to communicate with each other, to form
comraderie amongst themselves

## Proof Of Testing

<details>
<summary>Screenshots/Videos</summary>

</details>

## Changelog

🆑 ReturnToZender
qol: Merges Interslavic and Spinwarder into one language
qol: Merges Chitinclick and Buzzwords into one bug language
/🆑

code/modules/surgery/organs/internal/tongue/_tongue.dm

@@ -77,7 +77,7 @@
 	return list(
 		/datum/language/common,
 		/datum/language/uncommon,
-		/datum/language/panslavic, //bubber edit; spinwarder removed
+		/datum/language/spinwarder, //bubber edit; spinwarder removed
 		/datum/language/draconic,
 		/datum/language/codespeak,
 		/datum/language/monkey,