Use pwd as a workspace; move sources to src/gopheros and rewrite imports

By setting up pwd as a Go workspace, we can trim import paths from
something like "github.com/achilleasa/gopher-os/kernel" to just
"kernel".

These changes make forking easier and also allows us to move the code to
a different git hosting provider without having to rewrite the imports.

src/gopheros/kernel/hal/hal.go

@@ -0,0 +1,23 @@
+package hal
+
+import (
+	"gopheros/kernel/driver/tty"
+	"gopheros/kernel/driver/video/console"
+	"gopheros/kernel/hal/multiboot"
+)
+
+var (
+	egaConsole = &console.Ega{}
+
+	// ActiveTerminal points to the currently active terminal.
+	ActiveTerminal = &tty.Vt{}
+)
+
+// InitTerminal provides a basic terminal to allow the kernel to emit some output
+// till everything is properly setup
+func InitTerminal() {
+	fbInfo := multiboot.GetFramebufferInfo()
+
+	egaConsole.Init(uint16(fbInfo.Width), uint16(fbInfo.Height), uintptr(fbInfo.PhysAddr))
+	ActiveTerminal.AttachTo(egaConsole)
+}