Printchar (#10451)

* Added PrintChar operation

* Added 1ue999 to contributors

* Added PrintChar description, and improved the design of it.

* Ok intellij, removing the int cast

* Added capability to print content icons (@flare or @router)
https://github.com/Anuken/Mindustry/pull/10451#discussion_r1941282280

* Formatting changes (hopefully all of them)

* Update core/src/mindustry/logic/LStatements.java

* Update core/src/mindustry/logic/LStatements.java

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Co-authored-by: Anuken <arnukren@gmail.com>

core/assets/bundles/bundle.properties

@@ -2415,6 +2415,7 @@ unit.emanate.description = Builds structures to defend the Acropolis core. Repai
 lst.read = Read a number from a linked memory cell.
 lst.write = Write a number to a linked memory cell.
 lst.print = Add text to the print buffer.\nDoes not display anything until [accent]Print Flush[] is used.
+lst.printchar = Add a UTF-16 character or content icon to the print buffer.\nDoes not display anything until [accent]Print Flush[] is used.
 lst.format = Replace next placeholder in text buffer with a value.\nDoes not do anything if placeholder pattern is invalid.\nPlaceholder pattern: "{[accent]number 0-9[]}"\nExample:\n[accent]print "test {0}"\nformat "example"
 lst.draw = Add an operation to the drawing buffer.\nDoes not display anything until [accent]Draw Flush[] is used.
 lst.drawflush = Flush queued [accent]Draw[] operations to a display.