chore: create release doc

Author: praveen-influx

RELEASE.md

@@ -0,0 +1,19 @@
+# Release process for Core
+
+## Manual
+
+- Create a branch and update `Cargo.toml` (examples: `3.0.0-beta.1`, `3.0.0-rc.1`, `3.0.0`)
+- Push the branch (this should include change to `Cargo.toml` and `Cargo.lock`)
+- Create a PR and merge this release PR
+- Checkout main locally and pull the changes
+- Create annotated tag, eg. `git tag -a 'v3.0.0-0.beta.1' -m 'beta.1 release'`. There is a full explanation on what each of those digits mean is in `.circleci/packages/config.yaml`.
+  This tag should match the regex as configured in `release-filter` in `.circleci/config.yml`
+- Once tagged, push it `git push origin v3.0.0-0.beta.1`
+- This should run the full build and publish the packages, a quick test will be to run a `curl`
+
+  e.g `curl https://dl.influxdata.com/influxdb/releases/influxdb3-core_x86_64-unknown-linux-gnu.tar.gz -o influxdb3-core_x86_64-unknown-linux-gnu.tar.gz  -v`
+
+  untar the package and run `./influxdb3 --version` and the version should match what was set in `Cargo.toml`
+
+
+_At some point this should be scripted so that versions etc are in sync between the steps_