Add example project, devcontainer config and debugger config

main.asm

@@ -0,0 +1,22 @@
+code_start_addr EQU #8000
+    ORG code_start_addr
+
+    MODULE main
+@code_run_addr:
+    ld a, 57
+    ld bc, 64
+    ld hl, 0
+    call print_string
+    db "Hello, world!", 0
+    ret
+
+    ENDMODULE
+
+    INCLUDE print.asm
+
+code_length EQU $ - code_start_addr
+
+    DEVICE ZXSPECTRUM48
+    SLDOPT COMMENT WPMEM, LOGPOINT, ASSERTION
+    SAVESNA "myprog.sna", code_run_addr
+    INCLUDE loader.asm