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>

.github/workflows/build-cmake-pkg.yml

@@ -21,6 +21,7 @@ jobs:
                 -DLLAMA_BUILD_TOOLS=OFF \
                 -DLLAMA_BUILD_EXAMPLES=OFF \
                 -DLLAMA_BUILD_APP=OFF \
+                -DLLAMA_BUILD_IS_DEV=OFF \
                 -DCMAKE_BUILD_TYPE=Release
           cmake --build build --config Release
           cmake --install build --prefix "$PREFIX" --config Release
@@ -29,7 +30,12 @@ jobs:
           tclsh <<'EOF'
           set build(commit)  [string trim [exec git rev-parse --short HEAD]]
           set build(number)  [string trim [exec git rev-list  --count HEAD]]
-          set build(version) "0.0.$build(number)"
+
+          set cmakelists [read [open "CMakeLists.txt" r]]
+          regexp {set\(LLAMA_VERSION_MAJOR\s+(\d+)\)} $cmakelists -> major
+          regexp {set\(LLAMA_VERSION_MINOR\s+(\d+)\)} $cmakelists -> minor
+          regexp {set\(LLAMA_VERSION_PATCH\s+(\d+)\)} $cmakelists -> patch
+          set build(version) "$major.$minor.$patch"
 
           set llamaconfig [read [open "$env(LLAMA_CONFIG)" r]]
           set checks [list "set\\(LLAMA_VERSION     \\s+$build(version)\\)" \