LeCroy: 8B10B trigger support

[azonenberg]

See #237. This ticket is for the C8B10B trigger type only.

Everything is under app.Acquisition.Trigger.Serial.C8B10B

Fields of interest:

• BitRate
• EqualizerMode = {None, Low, Medium, High}
• PatternType = {SymbolOR, SymbolString, Primitive, ProtocolError}
• Operation = {Include, Exclude}
• Encoding = {Binary, Hex}
• Invert = {true, false}

For PatternType=SymbolString

• StrDSymbol{0-7}EightBitsValue = Dx.x
• StrKSymbol{0-7}Value = Kx.x
• StrSymbol{0-7}Rd = {Positive, Negative, Either}
• StrSymbol{0-7}Type = {KSymbol, DSymbol, DontCare}
• SymbolCount = 1-8

For PatternType=SymbolOR

• ORSymbol{0-5}Rd = {Positive, Negative, Either}
• ORSymbol{0-5}Type = {KSymbol, DSymbol}
• KSymbol{0-5}ValueOR = Kx.x
• DSymbol{0-5}EightBitsValueOR = Dx.x
• SymbolCount = 1-6

Actions:

• ComputeBitRate