Add support for redo test_renode and redo test_all_renode

[dinkelk]

Summary

Adds dispatch entries to default.do so redo test_renode and redo test_all_renode resolve when invoked from inside this repo. Mirrors the dispatch already wired into ema-gnc-fsw / adamant for the RV32IMAF cross-compile-unit-test work.

What it enables

# Inside any xmera component test directory:
TARGET=RV32IMAF_Test redo test_renode

# At repo root, sweep every component test:
TARGET=RV32IMAF_Test redo test_all_renode

Both rules cross-compile the test ELF, launch it under renode, scrape AUnit's text-reporter summary out of the UART backend, and report PASS/FAIL.

Verified

Full xmera-components sweep on RV32IMAF_Test (cross+renode) — 13/13
PASS. Linux redo test_all — 13/13 PASS. No regressions.