Revert "refactor: decompose large attribute read/write functions"
Revert "refactor: decompose large attribute read/write functions"

This reverts commit 23a6e70ce5832aac526bbe3b13c7454bb97c892f.

StalderT/open62541,jpfr/open62541,StalderT/open62541,StalderT/open62541,bostjanv/open62541,jpfr/open62541,bostjanv/open62541,JGrothoff/open62541,jpfr/open62541,JGrothoff/open62541,open62541/open62541,AGIsmail/open62541,StalderT/open62541,AGIsmail/open62541,JGrothoff/open62541,open62541/open62541,open62541/open62541,open62541/open62541,jpfr/open62541,JGrothoff/open62541