ae[aA][f] [count] analyse esil accesses (regs, mem..)

Examples: aea show regs used in a range

• aea [ops] Show regs used in N instructions
• aea* [ops] Create mem.* flags for memory accesses
• aeaf Show regs used in current function
• aear [ops] Show regs read in N instructions
• aeaw [ops] Show regs written in N instructions
• aean [ops] Show regs not written in N instructions
• aeaj [ops] Show aea output in JSON format
• aeA [len] Show regs used in N bytes (subcommands are the same)