Is your feature request related to a problem? Please describe.

Current XMake only supports setting properties related to linking:

• Link directories
• Strip
• Syslinks
• Optimization level

compile_commands.json isn't get updated, even with plugin.compile_commands.autoupdate rule used not required by LSPs for now

While FPC, the compiler that XMake supports, can also:

• Add include (equals to C's header) + unit (which has both interface and implementation in one file) paths
• (Un)define symbols
• Use another dialect (Objective Pascal, ISO Pascal etc)
• Verbosity levels

Describe the solution you'd like

#7220 is on the works and should add most of the things that are most needed (thus mentioned above?)

Describe alternatives you've considered

No response

Additional context

No response