Add Apex rotator control

[mdblack98]

Baud 57,600 8,N,1

Don't know what these commands do but it was sending these continuously
[R21T11H00000000]
[R22T11H00000000]
[R23T11H00000000]
[R24T11H00000000]

Controller was sending 99 but Apex intiially was asking for 98 -- so the software needs to look at what the controller # is before sending commands.

Controller spits out one of these very 2 seconds.
This is unidirectional mode and what PSTRotator should want -- unless there's some ability for PSTRotator to understand bidirectional.
[T4BRFA99H00M0107] -- 0 degrees
[T4BRFA99H00M0100] -- 45 degrees
[T4BRFA99H00M0101] -- 90 degrees
[T4BRFA99H00M0102] -- 135 degrees
[T4BRFA99H00M0103] -- 180 degrees
[T4BRFA99H00M0104] -- 225 degrees
[T4BRFA99H00M0105] -- 270 degrees
[T4BRFA99H00M0106] -- 315 degrees

These are the bidirectional answers
[T4BRFA99H00M0200] -- 45
[T4BRFA99H00M0201] -- 90
[T4BRFA99H00M0202] -- 135
[T4BRFA99H00M0203] -- 180 Bidirectional N/S
[T4BRFA99H00M0204] -- 225
[T4BRFA99H00M0205] -- 270
[T4BRFA99H00M0206] -- 315
[T4BRFA99H00M0207] -- 0

All commands need CR added
The 98 should be replaced by whatever the rig returns -- in this case it was 99.
Startup: [LINK] returns [LINKOK]
LEFT:[R98T4AH01] [R99T4AH01] counter
RIGHT:[R98T4AH02]
UNI:[R98T4AH03] [R99T4AH03]
BI: [R98T4AH04] [R99T4AH04]
FLIP: [R98T4AH05] [R99T4AH05]

Direct switching
Seems the "98" model does not recognized the direct commands
[R99T4AM10] 0
[R99T4AM11] 45
[R99T4AM12] 90
[R99T4AM13] 135
[R99T4AM14] 180
[R99T4AM15] 225
[R99T4AM16] 270
[R99T4AM17] 315

Misc Commands
[GETVER]
response with string