sdp_util: fix unused warning

sdp_util: add sdp_valid_service_search_pattern

sdp_util: add sdp_attribute_list_valid

sdp_util: use bool from uuid_has_bluetooth_prefix

cmake: fix warnings, code cleanup

sdp_util: fix spelling

sdp_util: use uint32_t and bool

sdp_util: assert 16-bit DES is used for builder functions

sdp_util: print strings as characters instead of hex dump

sdp_util: guard printf_hexdump

license: update text

docs: use @return instead of @returns

sdp: prefix globals, update deinit function

fix unused warnings

# Conflicts:
# src/l2cap.c

sdp_util: remove ; after function declaration

src: remove commented code

sdp_util: skip memcpy if size == 0

ignore memcpy return value (always returns first parameter)

des_iterator: use bool return types [a2445]

ISRAC2012-Rule-12.1: add suggested parentheses

MISRAC2012-Rule-12.1: add suggested parentheses

MISRAC2012-Rule-12.1: add suggested parentheses

Use BTSTACK_FILE__ without __ prefix (MISRAC2012-Rule-21.1)

sdp_util: add getter for DE_STRING type

sdp_util: add de_get_len_safe, use uint32_t for length functions