scanner: Fix hyprwire_protocol cmake function

[hyperair]

Fix the hyprwire_protocol cmake function, which is currently broken in a number of ways

• Copy isClient logic from main CMakeLists.txt protocol function to handle the -client and -server suffixes in the generated filenames.
• Separate protoName and protoFile parameters for when there's a mismatch between the protocol name in the XML file and the filename of the protocol.xml file.

[hyperair]

Tested with the following CMakeLists.txt and the tests directory copied from this repo.

cmake_minimum_required(VERSION 3.19)
project(hyprwire_tests LANGUAGES CXX)

enable_testing()

set(CMAKE_CXX_STANDARD 23)
add_compile_options(
  -Wall
  -Wextra
  -Wpedantic
  -Wno-unused-parameter
  -Wno-unused-value
  -Wno-missing-field-initializers
  -Wno-narrowing
  -Wno-pointer-arith)

find_package(PkgConfig REQUIRED)
pkg_check_modules(hyprwire REQUIRED IMPORTED_TARGET hyprwire)

find_package(hyprwire-scanner REQUIRED)
include_directories(${CMAKE_BINARY_DIR})
link_libraries(PkgConfig::hyprwire)

add_executable(server tests/Server.cpp)
add_executable(client tests/Client.cpp)

set(generatedDir generated)

# needs https://github.com/hyprwm/hyprwire/pull/4
hyprwire_protocol(
  server
  FALSE
  "${generatedDir}"
  "test_protocol_v1"
  ${CMAKE_SOURCE_DIR}/tests
  "protocol-v1.xml"
)
hyprwire_protocol(
  client
  TRUE
  "${generatedDir}"
  "test_protocol_v1"
  ${CMAKE_SOURCE_DIR}/tests
  "protocol-v1.xml"
)

[vaxerski]

eh to be honest I'd nuke it anyways we dont use it