Create Conan packaging

[dkozel]

Conan is a build and packaging option that we'd like to setup.

Todo

• Setup Artifactory Server on artifactory.gnuradio.org
• Document process to install conan and add remote
• Make sure recipes exist for all deps
• Create conan recipe for gr4
• Add deps to conan recipe and update CMake
• Create CI pipelines that build/upload packages to our artifactory.

Dependencies

Name	Conan Name	CCI Ver	GR Ver
cpr	cpr	1.14.2	1.14.1
libcurl	libcurl	8.20.0	system
alsa	libalsa	1.2.13	Unknown
pulseaudio	pulseaudio	17.0	Unknown
SoapySDR	not present	N/A	system I think
TBB	onetbb	2023.0.0	Unknown
vir-simd	vir-simd	0.3.1	0.4.4
magic_enum	magic_enum	0.9.7	Unknown
ExprTk	exprtk	0.0.3	Unknown but probably same
boost-ut	boost-ext-ut	2.3.1	Commit from Apr 25
cpp-httplib	cpp-httplib	0.44.0	0.18.1