Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter

- CitrineOS core extracted (CSMS OCPP 2.0.1)
- OpenOCPP extracted (firmware OCPP 1.6J/2.0.1)
- ShapeShifter library installed (pip install -e)
- ShapeShifter specification extracted
- EVerest extracted

TODO updated with progress

tools/EVerest-main/third-party/bazel/toolchains/defs.bzl

@@ -0,0 +1,16 @@
+# Use as target_compatible_with for targets that require a Python toolchain,
+# which is not available for cross-compilation platforms.
+CROSS_PYTHON_INCOMPATIBLE = select({
+    "@platforms//cpu:armv7": ["@platforms//:incompatible"],
+    "@platforms//cpu:aarch64": ["@platforms//:incompatible"],
+    "//conditions:default": [],
+})
+
+# Use as target_compatible_with for test targets that cannot be
+# cross-compiled (e.g. tests linking host-only libraries like Catch2/GTest).
+CROSS_TEST_INCOMPATIBLE = select({
+    "@platforms//cpu:armv7": ["@platforms//:incompatible"],
+    "@platforms//cpu:aarch64": ["@platforms//:incompatible"],
+    "//conditions:default": [],
+})
+