https-dns-proxy: update to 2025.10.07-r1

https-dns-proxy: update to 2025.10.07-r1

Makefile:
* update to latest upstream: https://github.com/aarond10/https_dns_proxy/commit/7b27ecd5598d03bbe79651cc80efca886d433cd9
* update version, release
* drop CONFIGURE_ARGS as the build is curl-independent
* update the link to the documentation

README:
* add small README with the link to documentation

Config:
* rename procd_fw_src_interfaces to force_dns_src_interface to better reflect meaning
* add heartbeat_domain, heartbeat_sleep_timeout, heartbeat_wait_timeout options
* add default user, group and listen_addr options to the main config
* drop the user, group and listen_addr options from the instance configs

Init-script:
* start much earlier so that on boot, the procd_add_raw_trigger works on all systems
* create a ubus() helper function so that service delete does not produce "Command not found"
* new options handling where the global config options can be used for instance options
* some renaming of global/instance variables due to abovementioned redesign
* new open port detection, no longer relying on netstat
* new uci_changes() logic where it returns 0 or 1 instead of text
* new append_parm logic for not adding default value options to CLI
* new boolean options handling logic
* move config loading to load_package_config() function
* new logic for calling procd_set_config_changed firewall based solely on "$force_dns"
* source network.sh based on "${IPKG_INSTROOT}" path
* rename procd_fw_src_interfaces to force_dns_src_interface to better reflect meaning
* rename use_http1 to force_http1
* rename use_ipv6_resolvers_only to force_ipv6_resolvers

Uci-defaults:
* migrate to new option names

Signed-off-by: Stan Grishin <[email protected]>