Adding Cologne Meetup slides

[pgoslatara]

Resolves #

Problem

Solution

Checklist

• I have run this code in development, and it appears to resolve the stated issue.
• This PR includes tests, or tests are not required or relevant for this PR.

[github-actions]

Coverage Report

File	Stmts	Miss	Cover	Missing
src/dbt_bouncer
config_file_validator.py	106	2	98%	164, 194
runner.py	75	4	95%	128, 164–165, 223
utils.py	102	15	85%	42, 47, 141–155, 194
src/dbt_bouncer/artifact_parsers
parsers_common.py	47	1	98%	58
parsers_manifest.py	84	4	95%	172, 174, 182, 259
parsers_run_results.py	33	3	91%	64, 66, 69
src/dbt_bouncer/checks/manifest
check_models.py	198	1	99%	530
check_unit_tests.py	47	3	94%	100, 150, 201
src/dbt_bouncer/checks/run_results
check_run_results.py	19	2	89%	92–93
TOTAL	4008	35	99%

Tests	Skipped	Failures	Errors	Time
1	0 💤	0 ❌	0 🔥	7.748s ⏱️