build: use reusable workflows in ci [WPB-14852]

[coriolinus]

What's new in this PR

• ensure docs get built in all cases, but only deployed when main does
• identify all cases where multiple workflows do the same things and isolate those in workflows
• use parallel jobs wherever possible

---

PR Submission Checklist for internal contributors

• The PR Title
  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[github-actions]

Bencher Report

Branch	prgn/feat/reusable-workflows
Testbed	ubuntu-latest

Click to view all benchmark results

Benchmark	Latency	nanoseconds (ns)
Commit add f(group size)/cs1/mem/1002	📈 view plot 🚷 view threshold	18,845,000.00
Commit add f(group size)/cs1/mem/2	📈 view plot 🚷 view threshold	6,760,500.00
Commit add f(group size)/cs1/mem/202	📈 view plot 🚷 view threshold	9,718,300.00
Commit add f(group size)/cs1/mem/402	📈 view plot 🚷 view threshold	11,849,000.00
Commit add f(group size)/cs1/mem/602	📈 view plot 🚷 view threshold	14,690,000.00
Commit add f(group size)/cs1/mem/802	📈 view plot 🚷 view threshold	16,718,000.00
Commit add f(number clients)/cs1/mem/1002	📈 view plot 🚷 view threshold	984,590,000.00
Commit add f(number clients)/cs1/mem/2	📈 view plot 🚷 view threshold	7,028,000.00
Commit add f(number clients)/cs1/mem/202	📈 view plot 🚷 view threshold	84,901,000.00
Commit add f(number clients)/cs1/mem/402	📈 view plot 🚷 view threshold	220,550,000.00
Commit add f(number clients)/cs1/mem/602	📈 view plot 🚷 view threshold	426,760,000.00
Commit add f(number clients)/cs1/mem/802	📈 view plot 🚷 view threshold	675,610,000.00
Commit pending proposals f(group size)/cs1/mem/1002	📈 view plot 🚷 view threshold	117,010,000.00
Commit pending proposals f(group size)/cs1/mem/2	📈 view plot 🚷 view threshold	28,802,000.00
Commit pending proposals f(group size)/cs1/mem/202	📈 view plot 🚷 view threshold	46,334,000.00
Commit pending proposals f(group size)/cs1/mem/402	📈 view plot 🚷 view threshold	61,573,000.00
Commit pending proposals f(group size)/cs1/mem/602	📈 view plot 🚷 view threshold	79,866,000.00
Commit pending proposals f(group size)/cs1/mem/802	📈 view plot 🚷 view threshold	94,553,000.00
Commit pending proposals f(pending size)/cs1/mem/1	📈 view plot 🚷 view threshold	18,786,000.00
Commit pending proposals f(pending size)/cs1/mem/101	📈 view plot 🚷 view threshold	115,890,000.00
Commit pending proposals f(pending size)/cs1/mem/21	📈 view plot 🚷 view threshold	36,067,000.00
Commit pending proposals f(pending size)/cs1/mem/41	📈 view plot 🚷 view threshold	57,456,000.00
Commit pending proposals f(pending size)/cs1/mem/61	📈 view plot 🚷 view threshold	75,892,000.00
Commit pending proposals f(pending size)/cs1/mem/81	📈 view plot 🚷 view threshold	95,781,000.00
Commit remove f(group size)/cs1/mem/1002	📈 view plot 🚷 view threshold	26,689,000.00
Commit remove f(group size)/cs1/mem/2	📈 view plot 🚷 view threshold	6,819,200.00
Commit remove f(group size)/cs1/mem/202	📈 view plot 🚷 view threshold	9,126,700.00
Commit remove f(group size)/cs1/mem/402	📈 view plot 🚷 view threshold	11,747,000.00
Commit remove f(group size)/cs1/mem/602	📈 view plot 🚷 view threshold	17,103,000.00
Commit remove f(group size)/cs1/mem/802	📈 view plot 🚷 view threshold	22,016,000.00
Commit remove f(number clients)/cs1/mem/1002	📈 view plot 🚷 view threshold	30,549,000.00
Commit remove f(number clients)/cs1/mem/2	📈 view plot 🚷 view threshold	137,510,000.00
Commit remove f(number clients)/cs1/mem/202	📈 view plot 🚷 view threshold	114,710,000.00
Commit remove f(number clients)/cs1/mem/402	📈 view plot 🚷 view threshold	93,327,000.00
Commit remove f(number clients)/cs1/mem/602	📈 view plot 🚷 view threshold	71,886,000.00
Commit remove f(number clients)/cs1/mem/802	📈 view plot 🚷 view threshold	50,936,000.00
Commit update f(group size)/cs1/mem/1002	📈 view plot 🚷 view threshold	137,570,000.00
Commit update f(group size)/cs1/mem/2	📈 view plot 🚷 view threshold	7,122,100.00
Commit update f(group size)/cs1/mem/202	📈 view plot 🚷 view threshold	33,722,000.00
Commit update f(group size)/cs1/mem/402	📈 view plot 🚷 view threshold	59,721,000.00
Commit update f(group size)/cs1/mem/602	📈 view plot 🚷 view threshold	86,851,000.00
Commit update f(group size)/cs1/mem/802	📈 view plot 🚷 view threshold	112,280,000.00

🐰 View full continuous benchmarking report in Bencher

[coriolinus]

Actions to extract into common workflows:

• build rust target (?)
• build wasm target
• build kotlin/jvm target
• build android target
• build ios target
• rm either documentation/rust or rust/docs jobs; they do the same thing
• parallelize rust/check jobs with a matrix
• rm rust/build job as it provides no particular benefits or artifacts
• rm rust/wasm-build job as it provides no particular benefits or artifacts