Add the sqlite3_error_offset() interface. Use it to enhance error reporting

in the CLI.

FossilOrigin-Name: 7fa20ca4c09ab0249de0363691541fa836120ec277e72feb0e1516b9bfbdd97a

diff --cc manifest
index a6c925887db454302280744600f293dd99d34f6f,6cd01d0137e1e0e92de901ed0b3dde5a691156b7..1e06248283e9fe06440ff08e55820c6c3a936f75
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\sa\sminor\sproblem\sin\sthe\sCLI\sintroduced\sby\s[d156123885abe6bf],\sapparently.
- D 2021-12-24T19:44:11.241
 -C One\sminor\schange\sfor\san\sexceptional\scase\sin\ssqlite3_error_offset().
 -D 2021-12-25T00:19:46.998
++C Add\sthe\ssqlite3_error_offset()\sinterface.\s\sUse\sit\sto\senhance\serror\sreporting\nin\sthe\sCLI.
++D 2021-12-25T00:26:51.340
  F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
  F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
  F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@@ -1934,8 -1934,8 +1934,9 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
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+ R 8f03bf9f6f19504237d0970665f639d4
++T +closed c93609a8b9dc2e656bb4360138606e269fd323469f7666dbc3bbc699e431313e
  U drh
- Z 32815daf40ab0d51da0a9e14b1eae912
 -Z 4eae18cf6b28cc5b2fc2672ed68ce869
++Z 6c4e7daae6067f5d0876bbf1b0ae2412
  # Remove this line to create a well-formed Fossil manifest.

diff --cc manifest.uuid
index b59febd5a351576ec2d99879c845f2a7dc162625,45b61f562de0360f88306e9257ede4997ef8dc63..f50d0ac9bab8d41b96da9f1c7772419052e73dec
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 37e6e10f4364f556c7503c80408fc62895cdccdd0372fb2b63aaca02c3a1ee30
 -c93609a8b9dc2e656bb4360138606e269fd323469f7666dbc3bbc699e431313e
++7fa20ca4c09ab0249de0363691541fa836120ec277e72feb0e1516b9bfbdd97a