This patch adds a new flag `--separate_servers` to indicate whether to build
`pegasus_collector`，`pegasus_meta_server` and `pegasus_replica_server` binaries
separately, otherwise a combined `pegasus_server` binary will be built. The
corresponding option in CMake is `SEPARATE_SERVERS`.

There are 2 options stats_dump_period_sec and stats_persist_period_sec in
RocksDB to adjust the period to dump/persist stat, each RocksDB instance
creates 2 dependent threads for this aim.

A replica server is possible to serve thousands of replicas, it means
thousands of RocksDB instances are possible to be running in one process,
then thousands of threads will be created will may consume much resouce.

This patch introduces 2 options, then it's possible to disable the threads
by setting them to 0.

Fix build failures like:

1.
```
/bin/ld: /.../thirdparty/output/lib/libcurl.a(libcurl_la-content_encoding.o): in function `brotli_close_writer':
content_encoding.c:(.text+0x2c): undefined reference to `BrotliDecoderDestroyInstance'
```

2.
```
/bin/ld: /.../thirdparty/output/lib/libcurl.a(libcurl_la-easy.o): relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `malloc' which may bind externally can not be used when making a shared object; recompile with -fPIC
/bin/ld: /.../thirdparty/output/lib/libcurl.a(libcurl_la-easy.o)(.text+0x30): unresolvable R_AARCH64_ADR_PREL_PG_HI21 relocation against symbol `malloc'
```

3.
```
/bin/ld: idn.c:(.text+0x34): undefined reference to `idn2_lookup_ul'
```

…pache#2016)

fix(aarch64): Set the correct LD_LIBRARY_PATH for aarch64 platforms

Bumps google.golang.org/protobuf from 1.29.1 to 1.33.0.

…ion (apache#2019)

Use the current working directory rather than the fixed '/home/work/' directory.

Add a new configuration 'log_dir' to indicate the directory to place the
logs especially. 'data_dir' will be used if it's empty.

```diff
[core]
+log_dir = 
```

Mainly including:
- Using fmt::format/print instead of sprintf/printf, which is more convenient
  and faster
- Add some configuration validators
- Encapsulate print_header(), print_long_header() and print_body() for
  screen_logger and simple_logger
- Add more comments
- Naming improvment

…size and total count (apache#2024)

- A new symlink is added to point to the latest log file, the symlink is in
  the same directory as the log files.

**Behavior change:**
- Log file is rolled by `max_log_file_bytes` configuration (64MB by default)
  instead of the fixed line count, i.e. 200000.
- Log files are named as `log.<yyyyMMdd_hhmmss_SSS>`, e.g. log.20240524_1806_235
  instead of `log.<index>.txt`, e.g. log.123.txt

```diff
[tools.simple_logger]
+max_log_file_bytes =
```

Move lookup_hostname() from utils/utils.h to rpc_host_port, and remove the use
less addr2host() in src/base/pegasus_utils.h

There is no functionality changes.

…Cpp CLI tool (apache#2008)