log-manager: enable non-standard path for local tests

Enable the log-manager to be launched with a path other than
`/var/phosphor-logging` to allow it to be ran on a development system
for test purp

log-manager: enable non-standard path for local tests

Enable the log-manager to be launched with a path other than
`/var/phosphor-logging` to allow it to be ran on a development system
for test purposes. This required some refactoring throughout as to
how paths were handled.

Tested:

After running tests, `/tmp/phosphor-logging` is populated with
entries. Launching `./builddir/phosphor-log-manager
/tmp/phosphor-logging`, the log-manager will have the entries on
dbus:

```
$ busctl --user tree xyz.openbmc_project.Logging
└─ /xyz
└─ /xyz/openbmc_project
└─ /xyz/openbmc_project/logging
├─ /xyz/openbmc_project/logging/entry
│ ├─ /xyz/openbmc_project/logging/entry/100
│ ├─ /xyz/openbmc_project/logging/entry/101
│ ├─ /xyz/openbmc_project/logging/entry/102
│ ├─ /xyz/openbmc_project/logging/entry/103
```

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I84968edeed0dcf73aaf8bb653060b6d3400b9b7b

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clang-format: re-format for clang-18

clang-format-18 isn't compatible with the clang-format-17 output, so we
need to reformat the code with the latest version. The way clang-18
handles lambda forma

clang-format: re-format for clang-18

clang-format-18 isn't compatible with the clang-format-17 output, so we
need to reformat the code with the latest version. The way clang-18
handles lambda formatting also changed, so we have made changes to the
organization default style format to better handle lambda formatting.

See I5e08687e696dd240402a2780158664b7113def0e for updated style.
See Iea0776aaa7edd483fa395e23de25ebf5a6288f71 for clang-18 enablement.

Change-Id: I21d2ca8065f24fd73509229c517f5caf48934b60
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>

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Pull file path into elog Entry constructor

The path property on the FilePath interfaces was previously being set
after the entry object was created, sending a properties changed signal
after the int

Pull file path into elog Entry constructor

The path property on the FilePath interfaces was previously being set
after the entry object was created, sending a properties changed signal
after the interfaces added signal.

Since the path can be known at the time the entry is constructed, pass
it into the constructor instead so no extra signal will be sent.

Change-Id: I1150236d23cecb1df78e3fb4ae641c75b488af37

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filesystem: use non-experimental

std::filesystem has replaced std::experimental::filesystem
since at least C++17 and experimental no longer links without
extra effort in C++20. Use the C++17 std::f

filesystem: use non-experimental

std::filesystem has replaced std::experimental::filesystem
since at least C++17 and experimental no longer links without
extra effort in C++20. Use the C++17 std::filesystem APIs.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I33cfc22e04e435fcdca5bf83b5877a7a27c394c8

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add .clang-format

Change-Id: I2c36b7886a25d0b235693b0776019d29608e1d52
Signed-off-by: Patrick Venture <venture@google.com>

Move serialization template functions

Move serialization template functions from elog_serialize.hpp to
elog.serialize.cpp, since they are called only within the cpp.

Change-Id: I8df216e1d4a745d1386

Move serialization template functions

Move serialization template functions from elog_serialize.hpp to
elog.serialize.cpp, since they are called only within the cpp.

Change-Id: I8df216e1d4a745d1386fc310fc5d4d9535a8b7c3
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>

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Persist error d-bus objects

Use Cereal to implement serialization and de-serialization of
properties of error d-bus objects.

Serialize and persist error d-bus objects as they are put on the bus.
De

Persist error d-bus objects

Use Cereal to implement serialization and de-serialization of
properties of error d-bus objects.

Serialize and persist error d-bus objects as they are put on the bus.
De-serialize and restore them (if persistent ones exist) when
phosphor-log-manager starts up.

Change-Id: I1f5df1abbe74bfdb86e3e82a78ff7115e90e2112
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>

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