cleanup Readme and generate SBOM

sbom.template.json

@@ -0,0 +1,44 @@
+{
+    "spdxVersion": "SPDX-2.3",
+    "dataLicense": "CC0-1.0",
+    "SPDXID": "SPDXRef-DOCUMENT",
+    "name": "lezyne-rear-light-firmware",
+    "documentNamespace": "https://git.mosad.xyz/localhorst/lezyne-rear-light-firmware/@GIT_HASH@",
+    "creationInfo": {
+        "created": "@CMAKE_TIMESTAMP@",
+        "creators": [
+            "Tool: CMake+SPDX"
+        ]
+    },
+    "packages": [
+        {
+            "name": "main.c",
+            "SPDXID": "SPDXRef-mainc",
+            "downloadLocation": "https://git.mosad.xyz/localhorst/lezyne-rear-light-firmware/src/branch/main/main.c",
+            "filesAnalyzed": true,
+            "versionInfo": "@GIT_HASH@",
+            "licenseDeclared": "MIT License",
+            "homepage": "https://git.mosad.xyz/localhorst/lezyne-rear-light-firmware"
+        },
+        {
+            "name": "avr-gcc",
+            "SPDXID": "SPDXRef-avrgcc",
+            "downloadLocation": "NOASSERTION",
+            "filesAnalyzed": false,
+            "versionInfo": "@AVR_GCC_VERSION@",
+            "licenseDeclared": "GPL-3.0-or-later",
+            "supplier": "Organization: The GNU Project",
+            "homepage": "https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git"
+        },
+        {
+            "name": "avr-libc",
+            "SPDXID": "SPDXRef-avrlibc",
+            "downloadLocation": "NOASSERTION",
+            "filesAnalyzed": false,
+            "versionInfo": "2.2.1-1.2",
+            "licenseDeclared": "Modified BSD License",
+            "supplier": "Organization: AVRDUDES Authors",
+            "homepage": "https://github.com/avrdudes/avr-libc/"
+        }
+    ]
+}