tools: Inclusive language changes

tools: Inclusive language changes

BT core spec 5.3 promotes the usage of inclusive languages.
This CL replaces some terms with the more appropriate counterparts,
such as "central", "peripheral", "accept list", "reject list", and
"temporary link key". Note that some suggestions come from
https://specificationrefs.bluetooth.com/language-mapping/Appropriate_Language_Mapping_Table.pdf

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>