cmake : introduce semantic versioning (#26839)

* cmake : introduce semantic versioning (wip)

This commit introduces semantic versioning to llama.cpp.

* squash! cmake : introduce semantic versioning (wip)

* cmake : update test-cmake README notes [no ci]

* include libmtmd in output so show its semversioned

* ci : add make-release workflow

* ci : fix build number check in build-cmake-pkg.yml

* examples : remove trailing whitespace

* ci : abort if upstream ggml version does not exist

* ci : extract step contents into scripts

* ci : add GGML_NATIVE=OFF to ubuntu job

* examples : remove CI build information from test-cmake [no ci]

This commit removes the nightly/release information that I added
previously to keep this focused only on using building and installing
llama.cpp with cmake and being able to quickly verify changes or
troubleshoot issues.

* ci : merge scripts into single script

* remove -dev-build_number support

This commit removes the incremental build number (versioning) support
that I added. This was incorrect and we should only use the semver for
the version. Releases will be tag a nightly build and package
maintainers/managers that build from source can use the tag and it is
therefor important that the correct version is reported. So a
nightly-build will report the semver without the build number. The build
number and commit as availble via cmake and test-cmake has been updated
to include an example of using them:
```console
$ ./build.sh
[test-cmake] version: 0.1.0, build: 10360 (08c69e381)
...
```

Refs: https://github.com/ggml-org/llama.cpp/pull/26839#discussion_r3755836969

* docs: add initial release.md documentation

* cmake : clean-up and add LLAMA_BUILD_IS_DEV option

* ci : remove version input from make-release job

* ci : add LLAMA_BUILD_IS_DEV=OFF to build-cmake-pkg.yml

Refs: https://github.com/danbev/llama.cpp/actions/runs/31576801921/job/94050639145

* docs : update release notes with LLAMA_BUILD_IS_DEV info [no ci]

* ci : add TODO to winget workflow [no ci]

---------

Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>

CMakeLists.txt

@@ -2,6 +2,26 @@ cmake_minimum_required(VERSION 3.14...3.28) # for add_link_options and implicit
 project("llama.cpp" C CXX)
 include(CheckIncludeFileCXX)
 
+### llama.cpp version
+set(LLAMA_VERSION_MAJOR 0)
+set(LLAMA_VERSION_MINOR 1)
+set(LLAMA_VERSION_PATCH 0)
+set(LLAMA_VERSION_BASE "${LLAMA_VERSION_MAJOR}.${LLAMA_VERSION_MINOR}.${LLAMA_VERSION_PATCH}")
+
+# whether this is a development/nightly build
+# set this to OFF when making a release from a release tag (vX.Y.Z)
+# ref: https://github.com/ggml-org/ggml/discussions/1579
+option(LLAMA_BUILD_IS_DEV "llama: dev build" ON)
+
+if (LLAMA_BUILD_IS_DEV)
+    set(LLAMA_VERSION "${LLAMA_VERSION_BASE}-dev")
+else()
+    # TODO: check that the current commit is tagged correctly according to the version specified above
+    set(LLAMA_VERSION "${LLAMA_VERSION_BASE}")
+endif()
+
+message(STATUS "llama.cpp version: ${LLAMA_VERSION}")
+
 #set(CMAKE_WARN_DEPRECATED YES)
 set(CMAKE_WARN_UNUSED_CLI YES)
 
@@ -24,9 +44,6 @@ if (CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
     set(LLAMA_STANDALONE ON)
 
     include(git-vars)
-
-    # configure project version
-    # TODO
 else()
     set(LLAMA_STANDALONE OFF)
 endif()
@@ -139,7 +156,6 @@ endif()
 if (NOT DEFINED LLAMA_BUILD_COMMIT)
     set(LLAMA_BUILD_COMMIT        ${BUILD_COMMIT})
 endif()
-set(LLAMA_INSTALL_VERSION 0.0.${LLAMA_BUILD_NUMBER})
 
 # override ggml options
 set(GGML_ALL_WARNINGS   ${LLAMA_ALL_WARNINGS})
@@ -275,12 +291,12 @@ configure_package_config_file(
               LLAMA_BIN_INSTALL_DIR )
 
 write_basic_package_version_file(
-        ${CMAKE_CURRENT_BINARY_DIR}/llama-version.cmake
-    VERSION ${LLAMA_INSTALL_VERSION}
+        ${CMAKE_CURRENT_BINARY_DIR}/llama-config-version.cmake
+        VERSION ${LLAMA_VERSION}
     COMPATIBILITY SameMajorVersion)
 
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/llama-config.cmake
-              ${CMAKE_CURRENT_BINARY_DIR}/llama-version.cmake
+              ${CMAKE_CURRENT_BINARY_DIR}/llama-config-version.cmake
         DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/llama)
 
 configure_file(cmake/llama.pc.in