Simpler build, less dependencies (#827)

* Simpler build, less dependencies
* Follow ugly python linter
* Introduce Brewfile & Update Readme
* Make dist.sh target-specific
* Tidy up make output
* Get rid of cat and truncate (I still love cats tho)
* Suppress dd output
* Long live the cat

scripts/bin2dfu.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+
+import os
+import struct
+from zlib import crc32
+
+from flipper.app import App
+
+
+class Main(App):
+    def init(self):
+        self.parser.add_argument("-i", "--input", help=".bin input path", required=True)
+        self.parser.add_argument(
+            "-o", "--output", help=".dfu output path", required=True
+        )
+        self.parser.add_argument(
+            "-a",
+            "--address",
+            help="Flash address",
+            type=lambda x: int(x, 0),
+            required=True,
+        )
+        self.parser.add_argument(
+            "-l", "--label", help="DFU Target label", required=True
+        )
+        self.parser.add_argument(
+            "--vid", help="USB Vendor ID", default=0x0483, type=lambda x: int(x, 0)
+        )
+        self.parser.add_argument(
+            "--pid", help="USB Product ID", default=0xDF11, type=lambda x: int(x, 0)
+        )
+
+        self.parser.set_defaults(func=self.convert)
+
+    def convert(self):
+        if not os.path.exists(self.args.input):
+            self.logger.error(f'"{self.args.input}" does not exist')
+            return 1
+
+        with open(self.args.input, mode="rb") as file:
+            bin = file.read()
+
+        data = struct.pack("<II", self.args.address, len(bin)) + bin
+
+        # Target prefix
+        szTargetName = self.args.label.encode("ascii")
+
+        data = (
+            struct.pack("<6sBI255sII", b"Target", 0, 1, szTargetName, len(data), 1)
+            + data
+        )
+
+        # Prefix
+        data = struct.pack("<5sBIB", b"DfuSe", 0x01, len(data) + 11, 1) + data
+
+        # Suffix
+        data += struct.pack(
+            "<HHHH3sB", 0xFFFF, self.args.pid, self.args.vid, 0x011A, b"UFD", 16
+        )
+
+        dwCRC = ~crc32(data) & 0xFFFFFFFF
+
+        data += struct.pack("<I", dwCRC)
+
+        open(self.args.output, "wb").write(data)
+        return 0
+
+
+if __name__ == "__main__":
+    Main()()