givp/1.0.1: add recipe

[Arnime]

Adds ConanCenter recipe for GIVP 1.0.1.

• Upstream: https://github.com/Arnime/givp
• Release: https://github.com/Arnime/givp/releases/tag/v1.0.1
• License: MIT
• C++ standard: 17
• Header-only CMake package target: givp::givp
• Source archive is pinned with SHA256 in conandata.yml.

Local validation:

conan create recipes/givp/all --version 1.0.1 --build=missing -s compiler.cppstd=17

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