docs: Add Tx Service data decoder guide

[falvaradorodriguez]

Closes safe-global/safe-transaction-service#1985

[github-actions]

Branch preview

✅ Deployed successfully in branch deployment:

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

[github-actions]

Overall readability score: 55.48 (🔴 -0.42)

File	Readability
api-safe-transaction-service.mdx	50.63 (🔴 -0.2)
data-decoder.mdx	21.63 (-)

View detailed metrics

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

File	Readability	FRE	GF	ARI	CLI	DCRS
api-safe-transaction-service.mdx	50.63	38.21	9.83	14.5	15.25	7.14
	🔴 -0.2	🔴 -0.41	🔴 -0.07	🔴 -0.1	🟢 +0	🟢 +0.04
data-decoder.mdx	21.63	26	12.98	22	19	8.82
	-	-	-	-	-	-

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	55.48	48.73	10.88	12.81	12.43	7.61
	🔴 -0.42	🔴 -0.29	🔴 -0.03	🔴 -0.11	🔴 -0.08	🔴 -0.01

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

[Uxio0]

Looks good to me @tanay1337 could you review?

[falvaradorodriguez]

Looks good to me @tanay1337 could you review?

@Uxio0 I have added the part of safe-eth-py that is incorporated in this task: safe-global/safe-eth-py#1006

[Uxio0]

Awesome

[tanay1337]

A few minor updates, thanks!