mesa-ci-status: update generated report (links) and some refactoring

Add markdown link to the job in the job name. Show MR title with a link to the pipeline in the pipeline column.

Example:

PERIOD: Daily report for Wed Apr 13 2022

FAILED MERGE PIPELINES: 9/35 - 25.71%

FAILED JOBS: 21/2968 - 0.71%

TOP 10 FAILING JOBS:

job name	number of failures
zink	2
test-d3d12-quick_gl	2
windows-vs2019	2
llvmpipe	1
iris-glk-egl	1
debian-ppc64el	1
debian-i386	1
debian-arm64-build-test	1
debian-android	1
debian-vulkan	1

FAILED JOBS (limited to 100 entries):

job	pipeline	stage
zink	zink: fix up last of the RECT validation...	layered-backends
test-d3d12-quick_gl	nir,aco,ac/llvm,radv: combine non-adjace...	layered-backends
llvmpipe	nir,aco,ac/llvm,radv: combine non-adjace...	software-renderer
test-d3d12-quick_gl	radv,aco,ac/llvm,nir: BDA/global memory ...	layered-backends
iris-glk-egl	iris: More gracefully fail in resource_f...	intel
windows-vs2019	radv,aco,ac/llvm,nir: BDA/global memory ...	build-misc
debian-ppc64el	aco/ra: create VCC-affinities during RA ...	build-misc
debian-i386	aco/ra: create VCC-affinities during RA ...	build-misc
windows-vs2019	aco/ra: create VCC-affinities during RA ...	build-misc
debian-arm64-build-test	aco/ra: create VCC-affinities during RA ...	build-misc
debian-android	aco/ra: create VCC-affinities during RA ...	build-misc
debian-vulkan	aco/ra: create VCC-affinities during RA ...	build-x86_64
debian-clang	aco/ra: create VCC-affinities during RA ...	build-x86_64
fedora-release	aco/ra: create VCC-affinities during RA ...	build-x86_64
debian-release	aco/ra: create VCC-affinities during RA ...	build-x86_64
debian-testing-msan	aco/ra: create VCC-affinities during RA ...	build-x86_64
debian-testing-asan	aco/ra: create VCC-affinities during RA ...	build-x86_64
debian-testing	aco/ra: create VCC-affinities during RA ...	build-x86_64
iris-kbl-piglit 1/3	ci: Disable Google's lab	intel
zink	zink: avoid multiple runtime arrays in s...	layered-backends
iris-kbl-piglit 2/3	zink: rework device init	intel

INFORMATION: All numbers only considers mesa/mesa. Pipelines with updated_at < 2022-04-13 and jobs with finished_at < 2022-04-13 were ignored. FAILED MERGE PIPELINES: Calculated from finished pipelines triggered by Marge in a merge requests. Counted when a pipeline contains a failed job, even if it got retried and the pipeline passed (status success). FAILED JOBS: Consider jobs from the same pipelines from FAILED MERGE PIPELINES.