Add Greengrass APIs for resource management

v1.13.1

Add Greengrass APIs for resource management (#303)

Greengrass IPC client added

• Added Greengrass IPC client
• Added EventStream RPC capability

Use official tagged release of aws-crt-cpp

BUGFIX: Use aws-crt-cpp v0.14.1 tagged release, instead of main branch

Fix SNI checks when custom root-CA is used

• BUGFIX: Fix build issue where aws-lc attempt to install during cmake configure stage.
• BUGFIX: On Windows and Apple, fix Server Name Indicator (SNI) check when custom root-CA is used.
• IMPROVEMENT: Update proxy-aware samples with new proxy options

Update aws-crt-cpp to v0.13.6

Update aws-crt-cpp to v0.13.6 to bring up the following:

BUGFIX

• Don't run aws-lc's codegen at build time, it just introduces complexity.
• Some characters were not correctly URI-encoded
• Fix crash when peer hangs up immediately following first non-TLS write.
• Fix issue where TLS context initialization could fail on linux due to passing in buffers that weren't properly zero-terminated at their final length.
• OpenSSL libcrypto.a detection fixes

Optimization

• Only using extra warning and werror flags on Debug build type
• Add support to store and pass SDK Name & Version as a metric to IoT cloud

Http, Windows, and LibCrypto fixes

• BUGFIX: More validation of HTTP/1.1 messages.
• BUGFIX: Non-ascii file open fix on Windows
• BUGFIX: Restored OpenSSL (libcrypto.a) detection and improved robustness.

Reliability/stability fixes

• Fix an issue on Windows where time calculations would saturate when the machine had been up longer than 21 days
• Fix a linking error against aws-lc when building with shared libs on
• Fix an issue where using the default Api constructor could lead to crashes due to allocator mismatches.

BYO_CRYPTO

Ability to compile SDK with experimental bring-your-own crypto/TLS support.

Direct mqtt through http proxy

• Adds support for establishing direct mqtt connections through an http proxy

safely MQTT publish

• Underlying lib will keep the payload alive, now, the payload of publish doesn't need to be alive until the complete callback