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/schema/server.sql

@@ -0,0 +1,28 @@
+-- Schema for blocks and files metadata relation tables in SQLite database
+
+-- Table to store file metadata
+CREATE TABLE IF NOT EXISTS metadata (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,  -- Auto-incrementing ID for the file
+    file_hash VARCHAR(64) NOT NULL,   -- SHA-256 hash of the file content (64 characters for hex representation)
+    block_index INTEGER,           -- The index of the block in the file (NULL if not part of a file)
+    block_hash VARCHAR(64),         -- SHA-256 hash of the block data (64 characters for hex representation)
+    user_id INTEGER,               -- ID of the user who uploaded the block
+    block_size INTEGER,            -- Size of the block in bytes
+    downloads_count INTEGER DEFAULT 0, -- Number of times the block has been downloaded
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,  -- When the file was added to the database
+    FOREIGN KEY (user_id) REFERENCES users(id)  -- Foreign key constraint to users table
+);
+
+-- Index on file_hash for faster lookups
+CREATE INDEX IF NOT EXISTS idx_files_hash ON metadata (file_hash);
+
+-- Table to store user information
+CREATE TABLE IF NOT EXISTS users (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,  -- Auto-incrementing ID for the user
+    username VARCHAR(255) NOT NULL UNIQUE, -- Unique username
+    password VARCHAR(255) NOT NULL,        -- Hashed password
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP -- When the user was added to the database
+);
+
+-- Index on username for faster lookups
+CREATE INDEX IF NOT EXISTS idx_users_username ON users (username);