build: add meson support
Port the existing autotools build system to meson, add meson wrap files
for all openbmc dependencies, and add appropriate meson rules to
gitignore.
Tested:
Verified executables all build, test cases pass, and executables
install. Checked configuration files are all installed into the same
locations as a Yocto-built autotools version of the package. Manually
checked the symlinks for the systemd service files.
```
$ DESTDIR=/tmp/certificate_test ninja install
$ find /tmp/certificate_test/lib /tmp/certificate_test/usr/local/share/phosphor-certificate-manager/
/tmp/certificate_test/lib
/tmp/certificate_test/lib/systemd
/tmp/certificate_test/lib/systemd/system
/tmp/certificate_test/lib/systemd/system/multi-user.target.wants
/tmp/certificate_test/lib/systemd/system/multi-user.target.wants/phosphor-certificate-manager@authority.service
/tmp/certificate_test/lib/systemd/system/multi-user.target.wants/phosphor-certificate-manager@bmcweb.service
/tmp/certificate_test/lib/systemd/system/bmc-vmi-ca-manager.service
/tmp/certificate_test/lib/systemd/system/phosphor-certificate-manager@.service
/tmp/certificate_test/usr/local/share/phosphor-certificate-manager/
/tmp/certificate_test/usr/local/share/phosphor-certificate-manager/authority
/tmp/certificate_test/usr/local/share/phosphor-certificate-manager/bmcweb
$ ls -n /tmp/certificate_test/lib/systemd/system/multi-user.target.wants
total 0
lrwxrwxrwx 1 1000 1000 40 Dec 3 15:37 phosphor-certificate-manager@authority.service -> ../phosphor-certificate-manager@.service
lrwxrwxrwx 1 1000 1000 40 Dec 3 15:37 phosphor-certificate-manager@bmcweb.service -> ../phosphor-certificate-manager@.service
```
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ib9700b5a3bb437ccc157a2d060067b8e2b777981
diff --git a/.gitignore b/.gitignore
index 8e37126..f623d4f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
+build*/
+subprojects/*
+!subprojects/*.wrap
+
# Template from:
# https://github.com/github/gitignore/blob/master/Autotools.gitignore