Feat/add decoder service doc

[moisses89]

What it solves

Resolves safe-global/safe-decoder-service#176

[github-actions]

Branch preview

✅ Deployed successfully in branch deployment:

https://feat_add_decoder_service_doc--docs.review.5afe.dev

[github-actions]

Overall readability score: 35.85 (🔴 -0.21)

File	Readability
safe-decoder-service-reference.mdx	0 (-)
safe-decoder-service-overview.mdx	10.08 (-)
safe-decoder-service-reference.mdx	14.2 (-)

View detailed metrics

🟢 - Shows an increase in readability
🔴 - Shows a decrease in readability

File	Readability	FRE	GF	ARI	CLI	DCRS
safe-decoder-service-reference.mdx	0	0	19	22	19	11
	-	-	-	-	-	-
safe-decoder-service-overview.mdx	10.08	10.19	16.05	19.7	19	11
	-	-	-	-	-	-
safe-decoder-service-reference.mdx	14.2	5.39	12.66	22	19	10.24
	-	-	-	-	-	-

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	35.85	31.75	13.2	16.55	15.18	8.71
	🔴 -0.21	🔴 -0.2	🔴 -0.02	🔴 -0.04	🔴 -0.03	🔴 -0.02

View metric targets

Metric	Range	Ideal score
Flesch Reading Ease	100 (very easy read) to 0 (extremely difficult read)	60
Gunning Fog	6 (very easy read) to 17 (extremely difficult read)	8 or less
Auto. Read. Index	6 (very easy read) to 14 (extremely difficult read)	8 or less
Coleman Liau Index	6 (very easy read) to 17 (extremely difficult read)	8 or less
Dale-Chall Readability	4.9 (very easy read) to 9.9 (extremely difficult read)	6.9 or less