Inconsistend decode data can cause panic.

[rokath]

inconsistent TCOBSv1 buffer: [20 202 5 22 68 213 33 64 158 0]
inconsistent TCOBSv1 buffer: [32 209 0]
inconsistent TCOBSv1 buffer: [8 161 133 0]
inconsistent TCOBSv1 buffer: [8 249 89 0]
panic: runtime error: index out of range [-2]

goroutine 1 [running]:
github.com/rokath/tcobs/v1.repeatByte(...)
        C:/Users/ms/go/pkg/mod/github.com/rokath/tcobs@v0.0.0-20230205132339-8d91e904310e/v1/tcobsDecode.go:127
github.com/rokath/tcobs/v1.Decode({0xc00037a000, 0x10000, 0x10000}, {0xc00031af68, 0x1?, 0xf098})
        C:/Users/ms/go/pkg/mod/github.com/rokath/tcobs@v0.0.0-20230205132339-8d91e904310e/v1/tcobsDecode.go:95 +0x552
github.com/rokath/trice/internal/trexDecoder.(*trexDec).nextPackage(0xc0002fc000)
        C:/repos/trice/internal/trexDecoder/trexDecoder.go:148 +0x5d5
github.com/rokath/trice/internal/trexDecoder.(*trexDec).Read(0xc0002fc000, {0xc00034a000, 0x10000, 0x10000})
        C:/repos/trice/internal/trexDecoder/trexDecoder.go:205 +0x55
github.com/rokath/trice/internal/translator.decodeAndComposeLoop({0xc20420, 0xc000092a08}, 0xc00012dd50, {0xc20e18, 0xc0002fc000}, 0xc0000c7ce8?, 0x8add67?)
        C:/repos/trice/internal/translator/translator.go:143 +0x38c
github.com/rokath/trice/internal/translator.Translate({0xc20420?, 0xc000092a08}, 0xc20280?, 0xc000141830, 0xc0002785b8, 0xc000141980, {0x1f25271ee58?, 0xc0000da540})
        C:/repos/trice/internal/translator/translator.go:79 +0xaa7
github.com/rokath/trice/internal/args.logLoop({0xc20420?, 0xc000092a08}, 0xc000142600)
        C:/repos/trice/internal/args/handler.go:200 +0x730
github.com/rokath/trice/internal/args.Handler({0xc20580, 0xc0000ca008}, 0xc000142600, {0xc0000d4000, 0xc000142600?, 0x0?})
        C:/repos/trice/internal/args/handler.go:100 +0x305
main.doit({0xc20580, 0xc0000ca008}, 0xc00005c000?)
        C:/repos/trice/cmd/trice/main.go:44 +0x165
main.main()
        C:/repos/trice/cmd/trice/main.go:31 +0x50

[rokath]

Done in v0.9.0