[feature](function) Add H3 cell and coordinate functions (#69018)

### What problem does this PR solve?

Issue Number: N/A

Problem Summary: Add `h3_lat_lng_to_cell`, `h3_cell_to_lat_lng`, and
`h3_cell_to_boundary` using official H3 4.5.0. Coordinates use degrees
in latitude/longitude order. Invalid inputs return NULL; centers contain
two coordinates and boundaries preserve H3 vertex order without closing
the ring. Input NULL propagation uses the default execution framework.
FE has no separate Java H3 evaluator; constant folding through BE
remains supported.

Build H3 as a static C library from its 18 upstream core sources.
Generate its versioned API header in the build directory, export include
paths through the target, enable PIC, and inherit Doris sanitizer flags.
Only the H3 target relaxes third-party warning errors. The wrapper
avoids upstream standalone tools and global build options. Include the
upstream license attribution and NOTICE.

### Release note

Add three H3 SQL functions for mapping coordinates to cells and
retrieving cell centers and boundaries.

### Check List (For Author)

- Test
    - [x] Regression test
    - [x] Unit Test
    - [x] Manual test (add detailed scripts or steps below)
    - [ ] No need to test or manual test. Explain why:
- Behavior changed:
    - [ ] No.
    - [x] Yes. Add three SQL functions.
- Does this need documentation?
    - [ ] No.
- [x] Yes. SQL function documentation is needed; no documentation PR
yet.

Validation on Linux x86_64:
- ASAN BE build and clean FE build passed; H3 objects carry ASAN/UBSAN
flags.
- `run-be-ut.sh --run --filter=FunctionH3Test.* -j48`: all three tests
passed.
- `run-regression-test.sh --run -d
query_p0/sql_functions/spatial_functions -s test_h3`: generated results
with `-forceGenOut`, inspected them, and reran successfully. Includes
constant-folding modes, nullable/non-nullable table columns, all 16
resolutions, stored nested arrays, array expansion, filtering/grouping,
and 35,000 mixed rows.
- Compared 10,000 inputs per function against official C/Python H3
4.5.0: exact agreement. ClickHouse 26.3.9.8 (H3 3.7.1) matched cell IDs
and coordinates within tolerance (maximum coordinate error 8.29e-8
degrees).
- Clang-format 16 and targeted clang-tidy checks passed; no sanitizer
diagnostics during these tests. ARM/macOS builds were not run.

### Check List (For Reviewer who merge this PR)

- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label

run-be-ut.sh

@@ -256,12 +256,14 @@ update_submodule() {
 
 # Keep this list in sync with build.sh: be/CMakeLists.txt adds storage/index/ann
 # unconditionally, and its cmake-protect target add_subdirectory()s both faiss and openblas,
-# so the configure step fails outright when either is missing.
+# so the configure step fails outright when either is missing. The H3 wrapper also
+# requires its submodule to be initialized before configuring BE.
 update_submodule "contrib/datasketches-cpp" "datasketches-cpp" "https://github.com/apache/datasketches-cpp/archive/refs/heads/master.tar.gz"
 update_submodule "contrib/apache-orc" "apache-orc" "https://github.com/apache/doris-thirdparty/archive/refs/heads/orc.tar.gz"
 update_submodule "contrib/clucene" "clucene" "https://github.com/apache/doris-thirdparty/archive/refs/heads/clucene.tar.gz"
 update_submodule "contrib/openblas" "openblas" "https://github.com/apache/doris-thirdparty/archive/refs/heads/openblas.tar.gz"
 update_submodule "contrib/faiss" "faiss" "https://github.com/apache/doris-thirdparty/archive/refs/heads/faiss.tar.gz"
+update_submodule "contrib/h3" "h3" "https://github.com/uber/h3/archive/refs/tags/v4.5.0.tar.gz"
 
 if [[ "_${DENABLE_CLANG_COVERAGE}" == "_ON" ]]; then
     echo "export DORIS_TOOLCHAIN=clang" >>custom_env.sh