Refactor/project structure (#3085)

* refactor project structure

* environment-based default registry

* fix tests

* update build container

* use docker platform for iso build emulation

* simplify compat

* Fix docker platform spec in run-compat.sh

* handle riscv compat

* fix bug with dep error exists attr

* undo removal of sorting

* use qemu for iso stage

---------

Co-authored-by: Mariusz Kogen <k0gen@pm.me>
Co-authored-by: Matt Hill <mattnine@protonmail.com>

build/env/basename.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+PROJECT=${PROJECT:-"startos"}
+
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+PLATFORM="$(if [ -f ./PLATFORM.txt ]; then cat ./PLATFORM.txt; else echo unknown; fi)"
+VERSION="$(cat ./VERSION.txt)"
+GIT_HASH="$(cat ./GIT_HASH.txt)"
+if [[ "$GIT_HASH" =~ ^@ ]]; then
+  GIT_HASH=unknown
+else
+  GIT_HASH="$(echo -n "$GIT_HASH" |  head -c 7)"
+fi
+STARTOS_ENV="$(cat ./ENVIRONMENT.txt)"
+VERSION_FULL="${VERSION}-${GIT_HASH}"
+if [ -n "$STARTOS_ENV" ]; then
+  VERSION_FULL="$VERSION_FULL~${STARTOS_ENV}"
+fi
+
+echo -n "${PROJECT}-${VERSION_FULL}_${PLATFORM}"