build: self-hosted runner preparation script

this will install all the build pre-requisites for a Tartelet/Tart
self-hosted VM and warm up the cache with one build run

should be used on the persistent base Tart VM image, prior to starting
Tartelet which will clone that into ephemeral runners

Author: mikehardy

tools/install-prerequisites-tartelet.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# This script expects to be run from the tools directory in
+# a local checkout of Anki-Android-Backend, e.g.
+# git clone https://github.com/ankidroid/Anki-Android-Backend
+# cd Anki-Android-Backend/tools
+
+# Update the actions runner if needed?
+# latest release and instructions here:
+# https://github.com/actions/runner/releases
+
+# Install rustup, but empty
+#curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain none
+
+# Make sure our submodules are up to date
+
+# Install the Rust toolchains we need
+for RUST_TC in `find .. |grep rust-toolchain.toml`; do rustup toolchain install `grep channel $RUST_TC | cut -f2 -d'"'`; done
+
+# we need protobuf
+brew install protobuf
+export PROTOC=`which protoc`
+
+# install the JDK we need
+brew install temurin@21
+
+# install the NDK we need
+cargo install toml-cli
+export ANDROID_NDK_VERSION=$(toml get ../gradle/libs.versions.toml versions.ndk --raw)
+export PATH="$PATH:$ANDROID_HOME/cmdline-tools/latest/bin"
+../.github/scripts/install_ndk.sh ${ANDROID_NDK_VERSION}
+export ANDROID_NDK_LATEST_HOME="${ANDROID_SDK_ROOT}/ndk/${ANDROID_NDK_VERSION}"
+export ANDROID_NDK_HOME=$ANDROID_NDK_LATEST_HOME
+
+# install our cross compilers
+# TODO - for BREWCMD in `grep "brew install" ../.github/workflows/build-release.yml`; do $BREWCMD; done
+brew install mingw-w64 
+brew install MaterializeInc/crosstools/x86_64-unknown-linux-gnu
+
+# install anki-specific build tool N2
+../anki/tools/install-n2
+
+# Warm up local caches with a run of workflow build commands
+cd ..
+
+# from build-quick.yml
+cargo run -p build_rust
+./check-rust.sh
+./gradlew test rsdroid:lint
+
+# from build-release.yml
+export ALL_ARCHS=1
+export RELEASE=1
+export CARGO_PROFILE_RELEASE_LTO=fat
+./build.sh