Add support for Bootloader Write Addr32

[mablem8]

• Add a description of Bootloader Write Addr32 to DOCUMENTATION.md
• Add Bootloader Write Addr32 to c-implementation/tab.c with an external handler
• Add a handler implementation of Bootloader Write Addr32 to cdh-monolithic.c
• Add a handler implementation of Bootloader Write Addr32 to com-monolithic.c
• Add an implementation of Bootloader Write Addr32 to python-implementation/tab.py
• Add testing of Bootloader Write Addr32 in python-examples/tx/tx_example.py
• Test support for Bootloader Write Addr32 with c-examples/cdh-monolithic and python-examples/tx

[ChadTaylor17]

• Add a description of Bootloader Write Addr32 to DOCUMENTATION.md
• Add Bootloader Write Addr32 to c-implementation/tab.c with an external handler
• Add a handler implementation of Bootloader Write Addr32 to cdh-monolithic.c
• Add a handler implementation of Bootloader Write Addr32 to com-monolithic.c
• Add an implementation of Bootloader Write Addr32 to python-implementation/tab.py
• Add testing of Bootloader Write Addr32 in python-examples/tx/tx_example.py
• Test support for Bootloader Write Addr32 with c-examples/cdh-monolithic and python-examples/tx

Support tests results:

In app mode:
txcmd: bootloader_write_page_addr32 hw_id:0x1234 msg_id:0x000a src:gnd dst:cdh Address: 0x08008000 hex_data:0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
reply: common_nack hw_id:0x1234 msg_id:0x000a src:cdh dst:gnd

In bootloader mode:
txcmd: bootloader_write_page_addr32 hw_id:0x1234 msg_id:0x000a src:gnd dst:cdh Address: 0x08008000 hex_data:0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
reply: bootloader_ack hw_id:0x1234 msg_id:0x000a src:cdh dst:gnd reason:0x08008000(addr)

Changes can be seen on this branch

[mablem8]

Link to the commit that addresses the issue instead of the branch (since the branch will eventually be pruned after merging). Commit 852a728 fails when testing with tx_example.py. Commit 71684fc rectifies the problem. Changes look good but the issue remains open while waiting on COM support.