Keyboard: 5291 firmware to replace the existing soarers controller firmware (#4483)

* compiles but is not working

* still testing 5291

* compiles but is not working

* still testing 5291

* fixed a but in the layout (reversed key order in row)

* compiles but is not working

* still testing 5291

* fixed a but in the layout (reversed key order in row)

* fixed some issues

* doumentation needed

* doumentation needed

* documentation needed

* documentation needed

* Update readme.md

documentation

* Update readme.md

i dislike markdown <_>

* merge preperation

keyboards/converter/ibm_5291/matrix.csv

@@ -0,0 +1,96 @@
+0,Z
+1,S
+2,W
+3,3
+4,X
+5,D
+6,E
+7,4
+8,C
+9,F
+10,R
+11,5
+12,V
+13,G
+14,T
+15,6
+16,B
+17,H
+18,Y
+19,7
+20,N
+21,J
+22,U
+23,8
+24,PAD_2
+25,PAD_5
+26,PAD_8
+27,NUM_LOCK
+28,M
+29,K
+30,I
+31,9
+32,COMMA
+33,L
+34,O
+35,0
+36,PERIOD
+37,SEMICOLON
+38,P
+39,MINUS
+40,SLASH
+41,QUOTE
+42,LEFT_BRACE
+43,EQUAL
+44,SPACE
+45,RSHIFT
+46,BACK_QUOTE
+47,RIGHT_BRACE
+48,CAPS_LOCK
+49,PAD_ASTERIX
+50,ENTER
+51,BACKSPACE
+52,PAD_0
+53,PAD_1
+54,PAD_4
+55,PAD_7
+56,PAD_PLUS
+57,UNASSIGNED
+58,PAD_MINUS
+59,SCROLL_LOCK
+60,PAD_PERIOD
+61,PAD_3
+62,PAD_6
+63,PAD_9
+64,BACKSLASH
+65,A
+66,Q
+67,2
+68,LALT
+69,UNASSIGNED
+70,UNASSIGNED
+71,1
+72,F7
+73,F5
+74,F3
+75,F1
+76,F8
+77,F6
+78,F4
+79,F2
+80,F10
+81,UNASSIGNED
+82,UNASSIGNED
+83,UNASSIGNED
+84,F9
+85,UNASSIGNED
+86,UNASSIGNED
+87,UNASSIGNED
+88,LSHIFT
+89,LCTRL
+90,TAB
+91,ESC
+92,UNASSIGNED
+93,UNASSIGNED
+94,UNASSIGNED
+95,UNASSIGNED