feat(driver): BitScrambler support

This adds an assembler for the BitScrambler assembly language,
plus unit tests for it. It also adds the loopback driver,
which can do BitScrambler operations on memory-to-memory
transfers. Documentation is also included.

.gitlab/ci/host-test.yml

@@ -205,6 +205,8 @@ test_tools:
     - pytest --noconftest test_idf_py.py       --junitxml=${IDF_PATH}/XUNIT_IDF_PY.xml                    || stat=1
     - pytest --noconftest test_hints.py        --junitxml=${IDF_PATH}/XUNIT_HINTS.xml                     || stat=1
     - pytest --noconftest test_idf_qemu.py     --junitxml=${IDF_PATH}/XUNIT_IDF_PY_QEMU.xml               || stat=1
+    - cd ${IDF_PATH}/tools/test_bsasm
+    - pytest --noconftest test_bsasm.py        --junitxml=${IDF_PATH}/XUNIT_BSASM.xml                     || stat=1
     - cd ${IDF_PATH}/tools/test_mkdfu
     - pytest --noconftest test_mkdfu.py        --junitxml=${IDF_PATH}/XUNIT_MKDFU.xml                     || stat=1
     - cd ${IDF_PATH}/tools/test_idf_size

.gitlab/ci/rules.yml

@@ -126,6 +126,9 @@
 
   - "tools/check_python_dependencies.py"
 
+  - "tools/bsasm.py"
+  - "tools/test_bsasm/**/*"
+
 .patterns-docker: &patterns-docker
   - "tools/docker/**/*"