libnghttp2: add version 1.62.1, support with_app and with_hpack

[toge]

Specify library name and version: libnghttp2/1.62.1

nghttp2/nghttp2@v1.61.0...v1.62.1

libnghttp2/1.62.1 requires C++20 while libnghtt2<1.62.0 requires C++14.

To solve compilation errors on with_app=True or with_hpack=True,
Several cmake_deps properties are added.

---

• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 3 (82c7b65935209c2635b05a96502ff92a09eb2617):

• libnghttp2/1.59.0:
  All packages built successfully! (All logs)

• libnghttp2/1.61.0:
  All packages built successfully! (All logs)

• libnghttp2/1.60.0:
  All packages built successfully! (All logs)

• libnghttp2/1.58.0:
  All packages built successfully! (All logs)

• libnghttp2/1.57.0:
  All packages built successfully! (All logs)

• libnghttp2/1.62.1:
  All packages built successfully! (All logs)

• libnghttp2/1.56.0:
  All packages built successfully! (All logs)

• libnghttp2/1.55.1:
  All packages built successfully! (All logs)

• libnghttp2/1.54.0:
  All packages built successfully! (All logs)

• libnghttp2/1.55.0:
  All packages built successfully! (All logs)

• libnghttp2/1.51.0:
  All packages built successfully! (All logs)

• libnghttp2/1.53.0:
  All packages built successfully! (All logs)

• libnghttp2/1.50.0:
  All packages built successfully! (All logs)

---

Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 3 (82c7b65935209c2635b05a96502ff92a09eb2617):

• libnghttp2/1.61.0:
  All packages built successfully! (All logs)

• libnghttp2/1.60.0:
  All packages built successfully! (All logs)

• libnghttp2/1.57.0:
  All packages built successfully! (All logs)

• libnghttp2/1.59.0:
  All packages built successfully! (All logs)

• libnghttp2/1.62.1:
  All packages built successfully! (All logs)

• libnghttp2/1.56.0:
  All packages built successfully! (All logs)

• libnghttp2/1.58.0:
  All packages built successfully! (All logs)

• libnghttp2/1.55.1:
  All packages built successfully! (All logs)

• libnghttp2/1.55.0:
  All packages built successfully! (All logs)

• libnghttp2/1.54.0:
  All packages built successfully! (All logs)

• libnghttp2/1.51.0:
  All packages built successfully! (All logs)

• libnghttp2/1.53.0:
  All packages built successfully! (All logs)

• libnghttp2/1.50.0:
  All packages built successfully! (All logs)

[uilianries]

The variables are uppercase, but the CMake file name is not, causing missing package when building libnghttp2:

-- Could NOT find Libev (missing: LIBEV_LIBRARY LIBEV_INCLUDE_DIR) (Required is at least version "4.11")
-- Could NOT find Libcares (missing: LIBCARES_LIBRARY LIBCARES_INCLUDE_DIR) (Required is at least version "1.7.5")
-- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR) (Required is at least version "1.2.3")
-- Could NOT find Libbrotlienc (missing: LIBBROTLIENC_LIBRARY LIBBROTLIENC_INCLUDE_DIR) (Required is at least version "1.0.9")
-- Could NOT find Libbrotlidec (missing: LIBBROTLIDEC_LIBRARY LIBBROTLIDEC_INCLUDE_DIR) (Required is at least version "1.0.9")
-- Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY OPENSSL_INCLUDE_DIR) (Required is at least version "1.1.1")
-- Could NOT find Libngtcp2 (missing: LIBNGTCP2_LIBRARY LIBNGTCP2_INCLUDE_DIR) (Required is at least version "1.0.0")
-- Could NOT find Libngtcp2_crypto_quictls (missing: LIBNGTCP2_CRYPTO_QUICTLS_LIBRARY LIBNGTCP2_CRYPTO_QUICTLS_INCLUDE_DIR) (Required is at least version "1.0.0")
-- Could NOT find Libnghttp3 (missing: LIBNGHTTP3_LIBRARY LIBNGHTTP3_INCLUDE_DIR) (Required is at least version "1.1.0")
-- Could NOT find Systemd (missing: SYSTEMD_INCLUDE_DIRS SYSTEMD_LIBRARIES) (Required is at least version "209")
-- Could NOT find Jansson (missing: JANSSON_LIBRARY JANSSON_INCLUDE_DIR) (Required is at least version "2.5")

https://c3i.jfrog.io/c3i/misc-v2/logs/pr/23979/3-linux-gcc/libnghttp2/1.62.1//2a6d4ded4efa32cdae04eb5160eba3173013407e-build.txt

The project wants Capitalized names (I didn't check what Conan is providing):

• https://github.com/nghttp2/nghttp2/blob/d13a5758373931064636c1641db6277db45552dc/CMakeLists.txt#L61
• https://github.com/nghttp2/nghttp2/blob/d13a5758373931064636c1641db6277db45552dc/CMakeLists.txt#L87