Add .markdownlint.yaml

openbmc-test-automation has lots of great documentation in markdown
files.  Add a markdownlint configuration that lets markdownlint run on
them cleanly.

Descriptions of the different MDxxx tokens in the markdownlint schema
can be found at:
https://github.com/DavidAnson/markdownlint/blob/main/schema/.markdownlint.yaml

Change-Id: Ia8b3e43237b51ddbebc27e95db0f123375e1f974
Signed-off-by: Brad Bishop <[email protected]>

Author: bradbishop

.markdownlint.yaml

@@ -0,0 +1,23 @@
+---
+MD001: false
+MD003: false
+MD004: false
+MD007: false
+MD010: false
+MD012: false
+MD013: false
+MD014: false
+MD022: false
+MD025: false
+MD026: false
+MD029: false
+MD030: false
+MD031: false
+MD032: false
+MD033: false
+MD034: false
+MD036: false
+MD037: false
+MD038: false
+MD040: false
+MD041: false