Implement a sleep in windows that lasts longer

[OJ]

There were valid concerns that the use of Sleep() on Windows wasn't going to provide enough time given that the limit of using a DWORD for timeouts that are specified in milliseconds result in a limitation of approximately 49 days (thanks @bcook-r7 for pointing that out).

This PR uses the hidden NtDelayExecution function that is in ntdll.dll instead of Sleep where possible and falls back on Sleep if not found. This function can sleep for way longer (see code comments).

Verification

• [x] Issuing the sleep command still works as it does before.
• [x] Issuing the sleep command with a value > 50 days and < 22,000 years (such as 4752000 seconds) "works" (I pity the tester). Make sure that the session expiry time is updated so that when the sleep returns it doesn't just show down immediately.

[metasploit-public-bot]

Test PASSED. Refer to this link for build results (access rights to CI server needed): https://ci.metasploit.com//job/GPR-MeterpreterWin/201/ Test PASSED.

[metasploit-public-bot]

Test PASSED. Refer to this link for build results (access rights to CI server needed): https://ci.metasploit.com//job/GPR-MeterpreterWin/202/ Test PASSED.

[metasploit-public-bot]

Test PASSED. Refer to this link for build results (access rights to CI server needed): https://ci.metasploit.com//job/GPR-MeterpreterWin/203/ Test PASSED.

[metasploit-public-bot]

Test PASSED. Refer to this link for build results (access rights to CI server needed): https://ci.metasploit.com//job/GPR-MeterpreterWin/204/ Test PASSED.

[bcook-r7]

Works for me, thanks.

[OJ]

Thank you sir!