feat: display topic details using /api/v1/topics/{id} call

[svienot]

Description:

Leverage the new mirror-node /api/v1/topics/{id} REST API to display topic details.
The 3 properties mandatory in the API result are always displayed: Memo, Valid from and Valid until.
The other (nullable) properties are shown only when their value is non null.

Related issue(s):

Fixes #713

Notes for reviewer:

API available only on previewnet for the time being.

Deployed on staging server.

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[sonarcloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarCloud

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	82.86%	39231 / 47345
🔵	Statements	82.86%	39231 / 47345
🔵	Functions	63.06%	888 / 1408
🔵	Branches	84.07%	4103 / 4880

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/pages/TopicDetails.vue	99.17%	88.67%	100%	99.17%	195, 197
src/schemas/HederaSchemas.ts	96.41%	64.28%	87.5%	96.41%	111-125, 314-315, 734, 860-861, 863-864, 880-881, 883-890
src/utils/cache/TopicByIdCache.ts	96.61%	83.33%	100%	96.61%	54-55

Generated in workflow #947

[ericleponner]

Looks good (take #2)