feat: render markdown

[safeamiiir]

• Add markdown Library in the frontend to preview .md files
• Also make text/plain content type readable in the file Viewer.

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
aqueductcore/backend
context.py	33	4	88%	48–52, 59–60
main.py	19	4	79%	21–24, 31
session.py	13	4	69%	24–28
aqueductcore/backend/models
orm.py	31	1	97%	58
aqueductcore/backend/routers
files.py	88	2	98%	165–166
frontend.py	24	11	54%	22–33, 37
aqueductcore/backend/routers/graphql
mutations_schema.py	34	1	97%	40
query_schema.py	41	2	95%	64–66
router.py	11	1	91%	15
aqueductcore/backend/routers/graphql/mutations
experiment_mutations.py	21	1	95%	29
aqueductcore/backend/routers/graphql/resolvers
experiment_resolver.py	25	2	92%	28, 36
tags_resolver.py	25	3	88%	14, 44, 46
aqueductcore/backend/services
experiment.py	217	32	85%	82, 111–124, 154, 188, 194, 240, 243, 268, 299, 349, 355, 384, 390, 398, 428, 435, 443, 473–479, 486–490, 502–505
validators.py	33	2	94%	41, 46
TOTAL	798	70	91%

Tests	Skipped	Failures	Errors	Time
63	0 :zzz:	0 :x:	0 :fire:	9.938s :stopwatch: