feat: Add ProXPL syntax highlighting and a standard library test file.

Author: ProgrammerKR

extension/syntaxes/proxpl.tmLanguage.json

@@ -46,7 +46,7 @@
             "patterns": [
                 {
                     "name": "keyword.control.proxpl",
-                    "match": "\\b(if|else|while|for|return|import)\\b"
+                    "match": "\\b(if|else|while|for|return|use)\\b"
                 },
                 {
                     "name": "keyword.declaration.proxpl",

tests/stdlib_test.prox

@@ -1,9 +1,9 @@
 // Functional Test for ProXPL Stdlib v0.1
 
-import std.io;
-import std.fs;
-import std.sys;
-import std.core;
+use std.io;
+use std.fs;
+use std.sys;
+use std.core;
 
 // Test std.core
 print("Testing std.core...");