Created Config parameter (markdown)

Config-parameter.md

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+Don't forget to also enable some features for your firmware configuration: [Features](Features)
+
+Also don't forget to setup Bodmer/TFT_eSPI config parameter for your display, most of the bobbycars use the same display anyways. [peters_platine] already defines a pinout and display controller, as this is the most used configuration.
+
+# Default Settings
+Will be placed into the presets. Note that all default values can be changed at runtime and will also persisted in NVS.
+
+## Limits:
+Note, that you can dereive from [default_limits] which already defines sane limits for bobbycars.
+```
+  -DDEFAULT_IMOTMAX=25
+  -DDEFAULT_IDCMAX=27
+  -DDEFAULT_NMOTMAX=1000
+  -DDEFAULT_FIELDWEAKMAX=5
+  -DDEFAULT_FIELDADVMAX=40
+```
+
+## Motor inverted:
+Note, that you can dereive from [default_wheels_inverted] which already defines a good set of inversions to drive forward.
+```
+  -DDEFAULT_INVERTFRONTLEFT=false
+  -DDEFAULT_INVERTFRONTRIGHT=true
+  -DDEFAULT_INVERTBACKLEFT=false
+  -DDEFAULT_INVERTBACKRIGHT=true
+```
+
+## Display related:
+```
+  -DDEFAULT_SWAPSCREENBYTES=false
+```
+
+## Poti related:
+```
+  -DDEFAULT_GASMIN=850
+  -DDEFAULT_GASMAX=3700
+  -DDEFAULT_BREMSMIN=1300
+  -DDEFAULT_BREMSMAX=4000
+```
+
+## Gametrak related potis (only available when FEATURE_GAMETRAK enabled)
+```
+  -DDEFAULT_GAMETRAKXMIN=0
+  -DDEFAULT_GAMETRAKXMAX=4095
+  -DDEFAULT_GAMETRAKYMIN=0
+  -DDEFAULT_GAMETRAKYMAX=4095
+  -DDEFAULT_GAMETRAKDISTMIN=0
+  -DDEFAULT_GAMETRAKDISTMAX=4095
+```
+
+## Example display configuration that works on most bobbycars
+```
+  -DILI9341_DRIVER=1
+  -DTFT_MOSI=13
+  -DTFT_SCLK=15
+  -DTFT_CS=14
+  -DTFT_DC=12
+  -DTFT_RST=2
+  -DSPI_FREQUENCY=27000000
+```