Added ScopeLift foundry default settings to repo

[jferas]

Resolves #1

This PR aadds the default Foundry/Forge configuration used by ScopeLift to the repo, which will be used for the development of the new CompoundGovernor. This configuration will co-exist with the hardhat environment used for developing the earlier GovernorBravo contracts. To achieve this coexistence, the node library hardhat-foundry is installed by this PR, as described here.

To minimize style/formatting differences, the previously existing contract source files have been added to the "ignore" section of the formatter section of the foundry.toml file.

Additionally, an empty CompoundGovernor.sol and CompoundGovernor.t.sol file have been added to the repo, in the contracts, and contracts/test directories respectively, to satisfy execution of the forge build and test commands.

[github-actions]

Coverage after merging install-foundry into main will be

0.00%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
contracts
Comp.sol	0%	0%	0%	0%	106, 116–118, 129–131, 133, 133–135, 137, 140–141, 149, 162–166, 166, 166–167, 167, 167–168, 168, 168–169, 178–179, 190, 190, 190, 192–193, 193–194, 198, 198–199, 203, 203–204, 207–212, 212, 212–214, 214, 214–215, 217, 220, 224–226, 228, 230, 234, 234, 234–235, 235, 235, 237–239, 241, 245, 245–246, 246–250, 253, 253–257, 263, 265, 265, 265–266, 268–269, 272, 276, 276, 276–277, 281, 281, 281–282, 286–287, 287, 287–288, 292, 292, 292–293, 297–299, 64–65, 75, 87–88, 88, 88–89, 91, 94, 96–97
GovernorBravoDelegate.sol	0%	0%	0%	0%	102–106, 125–126, 160, 160, 160–161, 163, 172–173, 176–177, 179–180, 183, 194, 197, 199, 199, 199, 204–205, 224, 224, 224, 229, 229, 229, 235, 235, 235, 241, 241, 241, 245, 245, 245, 250–251, 251–252, 255, 255, 255, 259, 259, 259, 265–266, 268–270, 272, 272, 272, 276–289, 291, 293, 304, 312, 312, 312, 316–319, 327–328, 338, 338, 338, 344, 352, 352, 352, 356–359, 367, 375, 375, 375, 380, 383, 383, 385, 385, 385–386, 386, 386, 392, 392, 392, 400–402, 411, 434–435, 448, 457, 457, 457, 461–462, 462, 462–464, 464, 464–466, 466, 466–471, 471–473, 473, 473–475, 475, 475–477, 477, 477–478, 480, 490, 510, 518, 521, 524–525, 525, 525, 529, 549, 575, 577, 585, 593, 596, 598, 598, 598, 602, 623, 623, 623, 627, 627, 627, 631–633, 633, 633, 637, 639, 639, 639–641, 641, 641–643, 643–644, 647–649, 651, 660, 668, 668, 668, 672, 672, 672, 677–678, 680, 688, 688, 688, 692, 692, 692, 697–698, 700, 709, 709, 709, 713, 713, 713, 718–719, 721, 73, 73, 73, 733, 733, 733, 737, 739, 747, 747, 747, 751–752, 754, 763, 763, 763–764, 764, 764, 768–769, 77, 77, 77, 770, 78, 78, 78, 780, 780, 780, 786, 789, 792, 801, 801, 801, 807–808, 811, 814, 816–817, 82, 82, 82, 821, 823, 825, 86, 86, 86, 91, 91, 91, 96, 96, 96
GovernorBravoDelegator.sol	0%	0%	0%	0%	20, 22, 34, 36, 44, 44, 44, 48, 48, 48, 53–54, 56, 66, 68, 68–69, 81, 84–85, 88–89, 91–92
SafeMath.sol	0%	0%	0%	0%	100, 115, 115–116, 119–121, 121, 121, 123, 138, 154, 154, 154–155, 158, 173, 188, 188, 188–189, 30–32, 32, 32, 34, 46–48, 48, 48, 50, 62, 74, 74, 74–75, 77, 92, 92–93, 96–98, 98, 98
Timelock.sol	0%	0%	0%	0%	100–101, 101, 101, 103, 105, 110, 28, 28, 28–29, 29, 29, 31–32, 38, 38, 38–39, 39, 39–40, 40, 40–41, 43, 47, 47, 47–49, 51, 55, 55, 55–56, 58, 62, 62, 62–63, 63, 63, 65–66, 68–69, 73, 73, 73, 75–76, 78, 82, 82, 82, 84–85, 85, 85–86, 86, 86–87, 87, 87, 89, 91, 93, 93, 93–94, 96
contracts/test
GovernorAlpha.sol	0%	0%	0%	0%

[wildmolasses]

lgtm

[wildmolasses]

curious, why mark these as ignore?

[jferas]

A number of the original contracts got modified by "forge fmt" and adding them to the ignore list allows them to not show up as large diffs on the PR.