Add Baseline to Benchmarks Report

[SkyeHoefling]

Description

Add a baseline benchmark to each printed table. This will show the existing benchmark compared to the PR benchmark side-by-side. The data is saved in the repository, so we just need to extract it and merge it with the existing table

[SkyeHoefling]

@mitchelsellers @kenny-sellers I have a couple options for us to include baseline benchmarks, which one do you like best? Please vote with the emojis below

👍

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
BASELINE_PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
BASELINE_PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
BASELINE_PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
BASELINE_PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-
PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-

🚀

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
BASELINE_PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
BASELINE_PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
BASELINE_PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-
BASELINE_PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-

🎉 - Create 2 tables
PR Results

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-

Baseline Results

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
BASELINE_PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
BASELINE_PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
BASELINE_PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
BASELINE_PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-

Please leave any comments you may have

[kenny-sellers]

I voted. One thought and maybe I am an odd duck, what if baseline was first and then the PR result was below? In my mind, that makes it a little easier to compare the two because naturally I expect the baseline to be first.

[SkyeHoefling]

Something like this?
Baseline Results

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
BASELINE_PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
BASELINE_PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
BASELINE_PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
BASELINE_PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-

PR Results

Method	Mean	Error	StdDev	Gen 0	Gen 1	Gen 2	Allocated	Allocated native memory	Native memory leak
PrimaryImage_Write	2.438 s	0.0480 s	0.0624 s	-	-	-	256 B	222,030,124 B	-
PrimaryImage_ToArray	2.379 s	0.0475 s	0.1072 s	-	-	-	1,943,008 B	222,029,232 B	-
PrimaryImage_ToSpan	2.493 s	0.0498 s	0.0731 s	-	-	-	88 B	222,029,232 B	-
PrimaryImage_ToStream	2.413 s	0.0479 s	0.1061 s	-	-	-	1,943,072 B	222,029,248 B	-