Sync scarthgap-dev and remove N1SDP support

This MR sync changes from scarthgap-dev and removes the N1SDP

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Syncing from scarthgap-dev

Cherry picks from !265 (merged):

• 7e7d27f9
• 8dd804c8
• 96dc7f7c
• 74f04f56
• f88c5841
• 37b268d7
• 524e8fb5
• 9d3b5a72
• ba524491
• a7d8379c
• e9be70ef
• dcec1481
• 13e0b331
• 93885407
• 9e7a475c
• cbdfab3b
• fceeb122
• a061438c (partial changes added, ignoring scarthgap branch-related changes)
• bcd3b084
• 78c2f88f
• 37ae8d6d
• 17273c50
• bafd4685
• f6e34740
• 2cdc65b6

Cherry picks from !269 (merged):

• c2337b7c
• 66a05a13
• cb9d2060

Cherry picks from !272 (merged):

• cb48ebd2
• fef07107
• 21dcfc2c
• 9c9d5dab
• 91a1952f
• 26f07667

Cherry picks from !278 (merged):

• 8b3fd711
• d800128c

Cherry picks from !275 (merged):

• ddffd32b
• dd495144
• 0e7ac516
• 23124220
• 4bffe898

Cherry picks from !280 (merged):

• 48e9d00b
• c20e9ace

Cherry-pick from !281 (merged):

• 6503e6f4

Cherry picks from !283 (merged):

• 968055bf
• cb3b81fb

Cherry picks from !282 (merged):

• 516802f5
• c83354bc
• 46642722

Cherry-pick from !270 (merged):

• 98e14bed (partial changes)

Cherry picks from !289 (merged):

• 6d6a80f2
• 1f46cd8f

Cherry picks from !291 (merged):

• 4eee3241
• 82b151a6
• fcb31c80

Cherry-pick from !288 (merged):

• 801dd757

Cherry picks from !292 (merged):

• 29890558
• 0a5f4f4e
• 3a0219f3
• 67cfd48d

Cherry picks from !294 (merged):

• 21407022
• ee25a579

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These commits are not cherry-picked and are not required for main

From !265 (merged)

• 73061cb4

From !274 (merged)

• feaf2d98
• 02dec985

From !293 (merged)

• 3121e606

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Critical fixes and remove N1SDP support

• cassini-[ci,config]: Remove N1SDP support
• docs: Remove N1SDP references
• docs: Point to the latest documentation
• distro: Transition from WORKDIR
• tests: Transition from WORKDIR
• distro: Fix WORKDIR issue for parsec-service