Organize test suites in `swayfmt`

[eureka-cpu]

• [ ] parens
• [ ] block
• [x] array #2593 @eureka-cpu
• [ ] asm
• [ ] return
• [x] conditionals
  • [x] if/else #2597 & #2564 @eureka-cpu
  • [x] match #2539 & #2530 @eureka-cpu
• [ ] while
• [ ] index
• [ ] tuple field projection
• [ ] ref & deref
• [x] bitwise operators
• [x] comparison operators
• [x] logical operators
• [ ] reassignment
• [x] #2497

Edit: Extending this to re-organizing all tests in swayfmt