feat: Create minimal Zero-OS initramfs with console support

- Fixed build system to clone source repositories instead of downloading binaries
- Enhanced scripts/fetch-github.sh with proper git repo cloning and branch handling
- Updated scripts/compile-components.sh for RFS compilation with build-binary feature
- Added minimal firmware installation for essential network drivers (73 modules)
- Created comprehensive zinit configuration set (15 config files including getty)
- Added util-linux package for getty/agetty console support
- Optimized package selection for minimal 27MB initramfs footprint
- Successfully builds bootable vmlinuz.efi with embedded initramfs
- Confirmed working: VM boot, console login, network drivers, zinit init system

Components:
- initramfs.cpio.xz: 27MB compressed minimal Zero-OS image
- vmlinuz.efi: 35MB bootable kernel with embedded initramfs
- Complete Zero-OS toolchain: zinit, rfs, mycelium compiled from source

components/rfs/Dockerfile

@@ -2,22 +2,20 @@ FROM rust:slim as builder
 
 WORKDIR /src
 
-COPY fl-server /src/fl-server
 COPY rfs /src/rfs
-COPY docker2fl /src/docker2fl
 COPY Cargo.toml .
 COPY Cargo.lock .
 COPY config.toml .
 
 RUN apt-get update && apt-get install curl build-essential libssl-dev musl-tools -y
 RUN rustup target add x86_64-unknown-linux-musl
-RUN cargo build --release --bin fl-server --target=x86_64-unknown-linux-musl
+RUN cargo build --release --target=x86_64-unknown-linux-musl
 
 FROM alpine:3.19
 
 WORKDIR /app
 
-COPY --from=builder /src/target/x86_64-unknown-linux-musl/release/fl-server .
+COPY --from=builder /src/target/x86_64-unknown-linux-musl/release/rfs .
 COPY --from=builder /src/config.toml .
 
-ENTRYPOINT [ "./fl-server", "--config-path", "config.toml"]
+ENTRYPOINT [ "./rfs", "server", "--config-path", "config.toml"]