Rename build.yml to build-arch.yml and add different checks for each platform

Co-authored-by: squassina <8495707+squassina@users.noreply.github.com>

.github/workflows/build.yml

@@ -1,98 +0,0 @@
-name: Build
-
-on:
-  push:
-    branches: [main, master]
-    paths:
-      - '**.c'
-      - '**.h'
-      - '**.cpp'
-      - '**.scm'
-      - 'meson.build'
-      - 'meson_options.txt'
-      - 'flake.nix'
-      - 'protocols/**'
-      - '.github/workflows/build.yml'
-  pull_request:
-    branches: [main, master]
-    paths:
-      - '**.c'
-      - '**.h'
-      - '**.cpp'
-      - '**.scm'
-      - 'meson.build'
-      - 'meson_options.txt'
-      - 'flake.nix'
-      - 'protocols/**'
-      - '.github/workflows/build.yml'
-  workflow_dispatch:
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    container:
-      image: archlinux:latest
-    permissions:
-      contents: read
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      - name: Update system and install dependencies
-        run: |
-          # Update package database
-          pacman -Syu --noconfirm
-          
-          # Install build tools and all dependencies
-          pacman -S --noconfirm \
-            base-devel \
-            git \
-            meson \
-            ninja \
-            wayland \
-            wayland-protocols \
-            libinput \
-            libxkbcommon \
-            pcre2 \
-            pixman \
-            libdrm \
-            libxcb \
-            xcb-util-wm \
-            xorg-xwayland \
-            hwdata \
-            libliftoff \
-            libdisplay-info \
-            seatd \
-            mesa \
-            wlroots0.19 \
-            pkg-config
-            
-      - name: Install scenefx from AUR
-        run: |
-          # Install scenefx from AUR since it's not in official repos
-          # Create a non-root user for makepkg (AUR requires non-root)
-          useradd -m -G wheel builder
-          echo "builder ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
-          
-          # Clone and build scenefx from AUR as builder user
-          cd /home/builder
-          su - builder -c "git clone https://aur.archlinux.org/scenefx0.4.git"
-          cd scenefx0.4
-          su - builder -c "cd /home/builder/scenefx0.4 && makepkg -si --noconfirm"
-
-      - name: Configure meson
-        run: |
-          # Download meson subprojects if needed
-          meson subprojects download || true
-          meson setup build/ --prefix=/usr
-
-      - name: Build project
-        run: |
-          ninja -C build/
-
-      - name: Build summary
-        run: |
-          echo "✅ Build completed successfully!"
-          echo "Built executables:"
-          ls -lh build/mango build/mmsg