Replace resource tools with python scripts

May fix pipeline failures on ghactions where makeico or toarray just exit with a non-zero status for no reason.

Also makes it easier (possible, rather) to build TPT using a cross-compiling msvc toolchain on windows; you can't have two different msvc toolchains in PATH on windows because of course you can't.

toarray had been python before, maybe I converted it to cpp to avoid pulling in python as a dependency, I'm not sure. With android vanilla development (hopefully) gaining traction soon, we'll be relying anyway on helper scripts I've written in python, so python will be a dependency sooner or later. Meson implicitly makes python a dependency, but there could be Meson implementations out there that don't rely on python, who knows.

resources/make-ico.py

@@ -0,0 +1,38 @@
+import struct
+import sys
+
+(
+	script,
+	output_ico,
+	*input_pngs,
+) = sys.argv
+
+input_pngs_size = len(input_pngs)
+assert(input_pngs_size <= 255)
+
+ico_header = b''
+ico_data = b''
+data_offset = 6 + 16 * input_pngs_size
+for input_png in input_pngs:
+	with open(input_png, 'rb') as input_png_f:
+		data = input_png_f.read()
+	data_size = len(data)
+	assert(data_size >= 0x21)
+	magic, width, height, bit_depth, color_type = struct.unpack('>QxxxxxxxxLLBBxxxxxxx', data[0 : 0x21])
+	assert(magic == 0x89504E470D0A1A0A)
+	assert(width <= 256)
+	assert(height <= 256)
+	assert(bit_depth == 8)
+	assert(color_type == 6)
+	if width == 256:
+		width = 0
+	if height == 256:
+		height = 0
+	ico_header += struct.pack('<BBxxHHLL', width, height, 1, 32, data_size, data_offset)
+	data_offset += data_size
+	ico_data += data
+
+with open(output_ico, 'wb') as output_ico_f:
+	output_ico_f.write(struct.pack('<xxHH', 1, input_pngs_size))
+	output_ico_f.write(ico_header)
+	output_ico_f.write(ico_data)