Add Brazilian Portuguese keyboard layout

[samuelstj]

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Memory usage change @ 9119786

Board	flash	%	RAM for global variables	%
arduino:avr:leonardo	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:sam:arduino_due_x_dbg	0 - 0	0.0 - 0.0	N/A	N/A
arduino:samd:mkrzero	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/Serial flash	%	examples/Serial RAM for global variables	%
arduino:avr:leonardo	0	0.0	0	0.0
arduino:sam:arduino_due_x_dbg	0	0.0	N/A	N/A
arduino:samd:mkrzero	0	0.0	0	0.0

Click for full report CSV

Board,examples/Serial<br>flash,%,examples/Serial<br>RAM for global variables,%
arduino:avr:leonardo,0,0.0,0,0.0
arduino:sam:arduino_due_x_dbg,0,0.0,N/A,N/A
arduino:samd:mkrzero,0,0.0,0,0.0