feat: add layonara-builder Docker image with nasher, Nim, and NWN tools

builder/Dockerfile

@@ -0,0 +1,34 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    cmake \
+    git \
+    curl \
+    wget \
+    unzip \
+    ca-certificates \
+    libssl-dev \
+    pkg-config \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Nim via choosenim
+RUN curl https://nim-lang.org/choosenim/init.sh -sSf | bash -s -- -y
+ENV PATH="/root/.nimble/bin:${PATH}"
+RUN choosenim 2.2.0
+
+# Install neverwinter.nim tools (nwn_gff, nwn_script_comp, etc.)
+RUN nimble install neverwinter@2.1.2 -y
+
+# Install nasher
+RUN nimble install nasher -y
+
+# Install layonara_nwn (hak builder)
+RUN nimble install https://github.com/plenarius/layonara_nwn -y
+
+# Verify tools
+RUN nwn_gff --version && nasher --version && which nwn_script_comp
+
+WORKDIR /build