editorconfig and formatting - #326

info/Project.xml was an IntelliJ code style scheme (version 173, so IntelliJ 2017.3) that nothing has ever read: the IDE looks for .idea/codeStyles/Project.xml, no such directory exists here, and no build file, workflow or doc referenced it. It was also actively wrong — it declared 2-space Kotlin indentation while the codebase is 4-space throughout, so importing it and reformatting would have rewritten every file. Most of its bulk was Android XML layout attribute-arrangement rules, and the Compose Multiplatform rewrite left exactly two XML files, both manifests. Its one live setting, KOTLIN_OFFICIAL, is already set by kotlin.code.style in gradle.properties.

.editorconfig takes its place because IntelliJ, Android Studio, VS Code and ktlint all read it, and it can state the trailing-comma preference rather than leaving it to whoever formats next.

.gitattributes pins every text file to LF in the repository, with .bat checked out as CRLF for cmd.exe. It also marks jars, images and fonts binary so no normalisation pass is ever run across them — treating a compressed file as text rewrites bytes inside it and corrupts it silently. kotlin-js-store/wasm/yarn.lock was the only tracked text file still holding CRLF, written that way by yarn on Windows, and is converted here.