Change the default value for SPDLOG_BUILD_xxx

The value based on whether spdlog is used as a third-party dependency or
as a standalone project. If spdlog is included through add_subdirectory,
the tests/examples/benchmarsk are disabled by default, and if spdlog is
configured standalone, then they are enabled by default.

Revert "Add `conda` to package managers in README"

Add `conda` to package managers in README

Add set_sinks method to dist_sink

This allows users to set exactly the sinks they want, even if other
unknown application code has added bespoke sinks in the meantime.

Pessimizing move removed

WIN32: Don't deny access to file sinks from other processes

Add missing include in console_globals.h

remove invalid files from project