Rename StorageID related types, vars, and funcs

[fxamacker]

Updates #296 #292 https://github.com/onflow/flow-go/issues/1744 Updates PR #321 and more context at https://github.com/onflow/atree/pull/321#discussion_r1254622587

Description

Renamed types:

• StorageID to SlabID
• StorageIndex to SlabIndex
• StorageIDStorable to SlabIDStorable
• StorageIDError to SlabIDError
• and etc.

Renamed functions:

• ID() to SlabID() in Slab interface
• Array.StorageID() to Array.SlabID()
• OrderedMap.StorageID() to OrderedMap.SlabID()
• DecodeStorageIDStorable() to DecodeSlabIDStorable()
• NewStorageID() to NewSlabID()
• GenerateStorageID() to GenerateSlabID()
• and etc.

Renamed variables:

• CBORTagStorageID to CBORTagSlabID
• and etc.

---

• [x] Targeted PR against main branch
• [x] Linked to Github issue with discussion and accepted design OR link to spec that describes this work
• [x] Code follows the standards mentioned here
• [x] Updated relevant documentation
• [x] Re-reviewed Files changed in the Github PR explorer
• [x] Added appropriate labels

[codecov-commenter]

Codecov Report

Merging #322 (251b774) into main (2554c7a) will decrease coverage by 0.27%. The diff coverage is 71.82%.

@@            Coverage Diff             @@
##             main     #322      +/-   ##
==========================================
- Coverage   64.73%   64.47%   -0.27%     
==========================================
  Files          14       14              
  Lines        8045     8075      +30     
==========================================
- Hits         5208     5206       -2     
- Misses       2160     2191      +31     
- Partials      677      678       +1     

Impacted Files	Coverage Δ
slab.go	100.00% <ø> (ø)
storable_slab.go	31.88% <25.00%> (-13.58%)	:arrow_down:
errors.go	38.78% <41.66%> (ø)
map_debug.go	51.77% <66.66%> (ø)
basicarray.go	49.78% <70.00%> (ø)
map.go	66.78% <70.00%> (-0.10%)	:arrow_down:
array.go	69.92% <70.20%> (ø)
array_debug.go	52.28% <76.00%> (ø)
storable.go	54.41% <88.88%> (ø)
storage.go	74.17% <92.30%> (-0.75%)	:arrow_down:
... and 1 more