AOT ABI reminder

[yamt]

there are a few things which we can clean up when we break AOT ABI.
this issue is a reminder for them.

• merge WASMModuleInstanceExtraCommon into WASModuleInstance

• wasm-micro-runtime/core/iwasm/common/wasm_shared_memory.c

  Lines 16 to 17 in 48b71a0

  	* - it's a bit cumbersome to extend WASMMemoryInstance w/o breaking
  	* the AOT ABI.

• aot doesn't seem to handle large linear memory correctly #2469
• module instance has too much execution state #2512
• simpler xip detection Refine mmap usage in iwasm on posix platform #2739 (comment)
• reconsider string-based representation of exceptions
• it would be nicer to have a cheaper way to detect the embedded ELF for aot-debug so that a runtime w/o aot-debug can reject an aot module w/ aot-debug gracefully.
• alignment info here and there. cf. nuttx: use larger alignment for os_mmap and comment why #3017