Import YEEP-144 library 1.2 sources

Source-only snapshot of the 1.2 release. Drivers/ (the vendored ST HAL and
CMSIS) is excluded at 173 MB; fetch it from STMicroelectronics/STM32CubeH5 to
build.

.settings/bundles.store.json

@@ -0,0 +1,32 @@
+{
+  "bundles": [
+    {
+      "name": "st-arm-clangd",
+      "version": "21.1.0+st.2"
+    },
+    {
+      "name": "cmake",
+      "version": "4.2.3+st.1"
+    },
+    {
+      "name": "ninja",
+      "version": "1.13.2+st.1"
+    },
+    {
+      "name": "gnu-tools-for-stm32",
+      "version": "14.3.1+st.2"
+    },
+    {
+      "name": "programmer",
+      "version": "2.22.0+st.1"
+    },
+    {
+      "name": "stlink-gdbserver",
+      "version": "7.13.0+st.3"
+    },
+    {
+      "name": "gnu-gdb-for-stm32",
+      "version": "14.3.1+st.2"
+    }
+  ]
+}