[Keyboard] add kbd0 Curve0 60 ANSI

[kbd0]

Adding a keyboard

Description

Adding the Curve0 60 ANSI keyboard

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout (addition or update)
• Documentation

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[dunk2k]

Based on reference image:

1. Could layout information for this keyboard be altered to conform to PR Checklist regarding keyboards/PCBs with multiple layout options. (i.e. LAYOUT_all)
2. Compatible Community Layouts are:
   • 60_ansi
   • 60_ansi_split_bs_rshift

[kbd0]

Based on reference image:

1. Could layout information for this keyboard be altered to conform to PR Checklist regarding keyboards/PCBs with multiple layout options. (i.e. LAYOUT_all)

2. Compatible Community Layouts are:

   • 60_ansi
   • 60_ansi_split_bs_rshift

Am unsure how best to proceed here.

The keyboard supports split backspace, split left shift, and split right shift both ways (1u 1.75u or 1.75u 1u). This results in 2 * 2 * 3 = 12 possible layouts. Having 12 layouts to choose from seems annoying for the user but maybe this is the best way?

The PCB and default keymap are designed to work for most cases by default (backspace is either the 2u key or the right 1u key; left shift is either the 2.25u key or the (left) 1.25u key, right shift is either the 2.75u key or the (left) 1.75u key). But I can see how having just the full layout can be confusing

[dunk2k]

Am unsure how best to proceed here.

1. As per PR Checklist - in keyboard.json a LAYOUT_all layout will need to be provided in "layouts"
2. Layout macro/name in default keymap changed to LAYOUT_all
3. Add 60_ansi and 60_ansi_split_bs_rshift Community Layouts to keyboard.json ("layouts" and "community_layouts")
4. Optional: include a matrix_diagram.md file (search repo for examples)

I'd agree that a layout entry in "layouts" (keyboard.json file) for every single combination is excessive, matrix_diagram.md will allow experienced users to tailor firmware to their chosen physical layout.

[dunk2k]

as per Conversation