Update template and parts directories

[matiasbenedetto]

Changes proposed in this Pull Request:

Renaming folders:
block-templates -> templates
block-template-parts -> parts
Following the new Gutenberg convention: WordPress/gutenberg#36647

Related issue(s):

#5105

[MaggieCabrera]

Just a heads up, I think git mv is cleaner for this (in terms of files changed)

[matiasbenedetto]

Ohh, I never used git mv. 😅 It seems there are different opinions about if it is the same as mv or not.
oreilly, gitFaq, StackOverflow. I will create a new PR to test if we can see any difference. 🤔

[matiasbenedetto]

The other PR using git mv instead of mv.

[MaggieCabrera]

Ohh, I never used git mv. 😅 It seems there are different opinions about if it is the same as mv or not. oreilly, gitFaq, StackOverflow. I will create a new PR to test if we can see any difference. 🤔

yeah looks like they are basically the same" I was hoping we would maintain the history for the moved files while using github's history page, but looks like it doesn't work either way, sorry I made you do the same thing twice!

[scruffian]

Closing in favour of #5108