Clang format

[2bndy5]

• add clang-format config file
• updated CI workflow to check formatting (for all C++ sources including examples)
• ran clang-format on all C++ sources

Notes

There are some very long inline conditional expressions in the ncurses examples that seem to have gotten a slightly weird formatting. I can tell clang-format to ignore these lines if these changes are undesirable. I think its confusing : for an assignment operator.

     wprintw(rf24Pad, "Data-Rate: %s\n", dr == 0 ? "1MBPS" : dr == 1 ? "2MBPS"
-                                                        : dr == 2	? "250KBPS"
+                : dr == 2                                           ? "250KBPS"
                                                                     : "ERROR");
     int pa = radio.getPALevel();
     wprintw(rf24Pad, "PA Level: %s\n", pa == 0 ? "MIN" : pa == 1 ? "LOW"
-                                                     : pa == 2	 ? "HIGH"
-                                                     : pa == 3	 ? "MAX"
+                : pa == 2                                        ? "HIGH"
+                : pa == 3                                        ? "MAX"
                                                                  : "ERROR");

[TMRh20]

Works for me either way. I obviously haven't been too picky about formatting. :p

[2bndy5]

I think it was more readable as it was, so I told clang-format to ignore those lines. It really did seem like an error on clang-format's behalf.