add the last of the files and some basic stubs for most of the empty files from last commit

kernel/linker.ld

@@ -0,0 +1,31 @@
+ENTRY(_start)
+
+SECTIONS {
+    . = 1M;
+
+    .multiboot : {
+        *(.multiboot)
+    }
+
+    .text : {
+        *(.text)
+    }
+
+    .rodata : {
+        *(.rodata)
+    }
+
+    .data : {
+        *(.data)
+    }
+
+    .bss : {
+        *(.bss)
+        *(COMMON)
+    }
+
+    . = ALIGN(4096);
+    __stack_top = .;
+    . += 128K;
+    __stack_bottom = .;
+}