Bun, Inferno->React migration (#22529)

Re-creation of https://github.com/Aurorastation/Aurora.3/pull/21046 to
skip merge conflict hell. Brings us modern TGUI.

**ALTERNATE TITLE: TGUI HELLSCAPE PR
ABANDON ALL HOPE YE WHO ENTER HERE**

- [x] Migrate build tools (javascript -> typescript, bun for package
management).
- [x] Upgrade all TGUI dependencies and associated root files to
TG-congruent versions (axios, babel, dompurify, eslint, highlight,
marked, prettier, sass, source-map, stacktrace-parser, typescript).
- [x] InfernoJS -> React migrations
- [x] React cleanup and polish (migrate all remaining .js files to
appropriate .ts or .tsx filetype, all remaining hooks, linting, error
corrections, etc.)
- [ ] Test all remaining TGUI interfaces

tools/bootstrap/javascript.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+# bootstrap/bun
+#
+# Bun-finding script for all `sh` environments, including Linux, MSYS2,
+# Git for Windows, and GitHub Desktop. Invokable from CLI or automation.
+#
+# If a bun executable installed by a bootstrapper is present, it will be used.
+# Otherwise, this script requires a system `bun` to be provided.
+set -e
+
+# Load Bun version from dependencies.sh
+OldPWD="$PWD"
+cd "$(dirname "$0")/../.."
+. ./dependencies.sh  # sets BUN_VERSION (define this in dependencies.sh)
+cd "$OldPWD"
+BunVersion="$BUN_VERSION"
+BunFullVersion="bun-v$BunVersion"
+
+# If Bun is not present, install using the official installer.
+if ! command -v bun >/dev/null 2>&1; then
+    echo "Bun not found, installing with official installer..."
+    curl -fsSL https://bun.sh/install | bash -s $BunFullVersion
+    if [ -d "$HOME/.bun/bin" ]; then
+        export PATH="$HOME/.bun/bin:$PATH"
+    else
+        echo "Bun installation directory not found. Please check the installation."
+        exit 1
+    fi
+fi
+
+echo "Using Bun $(bun --version)"
+exec bun "$@"