turned out the cable connector attached to SSD is typically too long to
fit. this 90deg adapter helps.
the SSD is going to be connected to the main board via this adapter
in the next commit.
this also means the STEP file is replaced with a freecad native file
format.
the master sketch comes in very handy when designing mount and other
constructions around the LCD.
very simple, contains only the essential bits dimensions of which play
important role in the case design due to size restrictions.
there are two std parts: regular with sketches with sketches to
construct the body, and a simple refined version for the provcase
assembly.
the regular variant also has a master sketch to aid in defining
constraints in the provcase design.
alex